Highest redshift

• by dj_tjitso

  Just for fun, what's the highest redshift you found? This one has a redshift of 3.43, which is close to 12 billion lightyears away, according to this chart: http://apod.nasa.gov/apod/ap130408.html

  Posted March 31, 2015 10:03 AM

• by dj_tjitso

  AGZ0007yiw

  This one has a redshift of 3.9700000286102295

  Edit, that's almost 12.3 billion lightyears away

  Posted March 31, 2015 10:29 AM

• by dj_tjitso

  AGZ00081hl

  Z=4.050000190734863

  Posted March 31, 2015 10:48 AM

• by ramberts

  http://talk.galaxyzoo.org/#/subjects/AGZ0007yde
  4.13 but call me a skeptic on some of these!

  Posted March 31, 2015 11:32 AM

• by ramberts

  That edgeon is pretty detailed and no red...

  Posted March 31, 2015 11:33 AM

• by dj_tjitso

  But it does appear to be on the edge of the observable universe, so...

  

  😄

  Posted March 31, 2015 12:14 PM

• by ramberts

  Interesting topic but if thats a true edge on than its thin, maybe too thin for Hubble but i really dont know enough about Hubble images

  Posted March 31, 2015 10:50 PM

• by ramberts

  http://news.sciencemag.org/2012/07/hubble-spots-farthest-spiral-galaxy-ever-seen

  Posted March 31, 2015 10:52 PM

• by ramberts

  http://hubblesite.org/newscenter/archive/releases/galaxy/spiral/2014/33/

  Posted March 31, 2015 10:55 PM

• by ramberts

  I think from 4 redshift are super bright objects like quasars

  Posted March 31, 2015 10:57 PM

• by Budgieye moderator in response to ramberts's comment.

  z=7.5 (2014) red blob found in CANDELS (Hubble WFC) and confirmed by Keck telescope spectroscopy to be a galaxy, and not a quasar.

  

  Here are good chatty descriptions of the research. The redshifts in the CANDELS data are calculated photometric redshifts, (PhotoZ) and not reliable.

  http://candels-collaboration.blogspot.co.uk/2014/02/breaking-galaxy-distance-record.html

  http://candels-collaboration.blogspot.co.uk/2013/08/using-our-largest-set-of-eyes.html

  http://candels-collaboration.blogspot.co.uk/2012/06/search-for-most-distant-galaxies.html

  Posted April 1, 2015 7:46 AM

• by Budgieye moderator in response to ramberts's comment.

  z=2.2 lensed galaxy behind red elliptical at z=1.6, good of you to spot that. It would be nice if we found one too.

  

  http://hubblesite.org/newscenter/archive/releases/galaxy/spiral/2014/33/

  Posted April 1, 2015 8:14 AM

• by Budgieye moderator in response to ramberts's comment.

  z = 1.5 to 8 is the target range for galaxies using CANDELS

  CANDELS Survey Description

  The Cosmic Assembly Near-IR Deep Extragalactic Legacy Survey (CANDELS; Grogin et al. 2011; Koekemoer et al. 2011) is designed to document the first third of galactic evolution from z = 8 to 1.5 via deep imaging of more than 250,000 galaxies with WFC3/IR and ACS.

  http://candels.ucolick.org/survey/Survey_Desc.html

  Posted April 1, 2015 8:19 AM

• by ramberts

  Interesting. In your opinion, do the redshifts of any of the objects posted in this thread look accurate based on their images?

  Posted April 1, 2015 10:50 AM

• by ramberts

  RS 6.7
  

  Posted April 1, 2015 11:31 AM

• by dj_tjitso in response to Budgieye's comment.

  That's pretty far away.

  Posted April 1, 2015 11:59 AM

• by Budgieye moderator in response to dj tjitso's comment.

  Ha Ha, now I get it, It took me a while.😃

  Posted April 1, 2015 9:01 PM

• by Budgieye moderator in response to ramberts's comment.

  I'm not sure about the reliability of the photometric redshift. I think we need more galaxies and see what is realistic.

  z = 1.2009 clumpy galaxy

  from spectroscopy, from Galaxy Zoo Hubble 2012 by neuromante http://www.galaxyzooforum.org/index.php?topic=277967.msg612857#msg612857

  

  http://zoo-hst.s3.amazonaws.com/20124316.jpg

  DEEP2

  http://tkserver.keck.hawaii.edu/egs/dataAccess/notebook/egs_notebook.php?serial=13050511 (click smooth and labels, you may need to install JAVA updates and disable pop-up blocker)

  The spectrum shows that it is a pea, ie stars forming and exploding.so it has an OII peak.

  Posted April 1, 2015 9:17 PM

• by Budgieye moderator in response to ramberts's comment.

  Hi ramberts, do you have the ID for this red thing.

  Posted April 1, 2015 9:25 PM

• by ramberts

  AGZ000884T
  GDS_9821
  http://www.galaxyzoo.org/#/examine/AGZ000884t

  Posted April 2, 2015 12:10 AM

• by liometopum

  Hey Ramberts, I took that gigantic z, AGZ00081hl, got the coordinates, and plugged it into Aladin, and then got the SIMBAD data.

  Coordinates: 189.3867145 62.1914812

  The result is z(spectroscopic) 0.69824 .... NOT 4.05

  http://simbad.u-strasbg.fr/simbad/sim-id?Ident=GOODS+J123732.81%2B621129.3

  Your skepticism appears correct.

  Posted April 2, 2015 6:13 AM

• by liometopum

  Ramberts:

  Looking at Image AGZ0007yiw
  coordinates are 189.0846009 62.2916492
  Tools gives Redshift: 3.9700000286102295

  HOWEVER...Using Aladin, we get
  http://simbad.u-strasbg.fr/simbad/sim-id?Ident=GOODS+J123620.30%2B621729.9
  z(spectroscopic) 0.84802

  Posted April 2, 2015 6:21 AM

• by ramberts

  I'm gonna take a look at this Simbad website thanks 😃

  Posted April 2, 2015 6:39 AM

• by Budgieye moderator in response to ramberts's comment.

  z=0.96 (NED) or 6.7 (Tools) CANDELS 2-epoch I think if it were very distant, it would be a very pure red, as all wavelengths of light would be redshifted so much. So maybe we should look for pure red blobs.
  

  http://talk.galaxyzoo.org/#/subjects/AGZ000884t

  GDS_9821 http://www.galaxyzoo.org/#/examine/AGZ000884t

  Posted April 2, 2015 6:44 AM

• by Budgieye moderator in response to ramberts's comment.

  z=2.45 (Tools) or 2.53 (NED) orange blob in CANDELS 2-epoch

  

  Posted April 2, 2015 6:54 AM

• by Budgieye moderator in response to ramberts's comment.

  model on examples so far.

  z=1 clumpy galaxies are blue, spirals are blue, ellipticals are red

  z=2 clumpy galaxies are blue, spirals are blue, ellipticals are red

  z=3 clumpy galaxies are blue, spirals are blue, ellipticals are red

  z=4 ..........................................................., ellipticals are lost by redshifting?

  z=5

  z=6.............................spirals are lost by redshifting?

  z=7

  z=8 clumpy galaxies are red

  We need more examples to fill in the gaps.

  EDIT: There may have not been "red and dead" ellipticals in the past, they may have been blue and will not fall off the chart so easily.

  Posted April 2, 2015 7:00 AM

• by ramberts

  This article has 28 examples of high 6ish RS galaxies, and all are red or orange and reddish on the outside.
  http://iopscience.iop.org/0004-637X/653/1/53/pdf/62537.web.pdf

  Posted April 2, 2015 7:15 AM

• by Budgieye moderator in response to ramberts's comment.

  z=6 good find! agree, not pure red at this redshift

  

  http://iopscience.iop.org/0004-637X/653/1/53/fulltext/ http://iopscience.iop.org/0004-637X/653/1/53

  "These high-S/N images show definitive evidence for asymmetries, mergers, and other interactions, similar to that seen at lower redshifts (z ∼ 2–5)."

  Posted April 2, 2015 7:23 AM

• by Budgieye moderator

  model #2 I forgot that as you go back in time, all or most galaxies are small, star-forming and interacting. So they may all be clumpy.

  z=1 clumpy galaxies are blue, spirals are blue, ellipticals are orange-red

  z=2 clumpy galaxies are blue, spirals are blue, ellipticals are orange-red

  z=3 clumpy galaxies are blue, spirals are blue, ellipticals are pure red

  z=4 .................... any red and dead ellipticals,.non-interacting galaxies produce no UV light, any light produced is too long wavelength for Hubble to see

  z=5

  z=6 interacting (clumpy) galaxies are red and orange.

  z=7

  z=8 interacting galaxies (clumpy) (red blobs) are pure red, since no part of the spectrum survives redshifting to get through the blue filter.

  It will be difficult to tell the difference between pure red ellipticals at z=3 and pure red clumpy blobs at z=8. The shape, if we can see it, would be the best indicator. Ellipticals are round or oval, clumpy can be any shape.

  Posted April 2, 2015 8:22 AM

• by dj_tjitso

  So this would be a Z=6 candidate?

  AGZ000869r

  Tools is saying Z=1.35

  Edit, or is this an eliptical?

  Posted April 2, 2015 9:19 AM

• by dj_tjitso

  I found this one a couple of days ago:

  AGZ000874p

  Tools gives is a Z=5.2

  Posted April 2, 2015 10:51 AM

• by ramberts

  I think quasars may not necessarily be red.. And that lbg candidate was green that turned out to be a star At z 5.

  Posted April 2, 2015 12:16 PM

• by ramberts

  

  I dont think this one has been measured yet. If u look in ned, close coordinates give no z value. Might be a high one.
  http://talk.galaxyzoo.org/?&_ga=1.191612650.1523008579.1427367225#/subjects/AGZ0007xn6

  Posted April 2, 2015 12:18 PM

• by ramberts

  Forgot abouth this one, known agn and its green and rs 4.823.
  http://talk.galaxyzoo.org/?&_ga=1.191612650.1523008579.1427367225#/subjects/AGZ00082gn

  Posted April 2, 2015 12:38 PM

• by Budgieye moderator

  z=1.575 Tools or 2.208 NED 2 clumps one blue which is the GZ target, one blue-red

  

  http://talk.galaxyzoo.org/#/subjects/AGZ000841y

  Posted April 3, 2015 6:38 AM

• by Budgieye moderator in response to ramberts's comment.

  green AGN- lots of references in NED about being an AGN.

  GOODS full-depth COMBO-17 35297 COMBO-17_35297

  Note to self: Since it is an AGN, it will be a different colour to star-forming galaxies. Since it is source of short wavelength UV light, AGNs will continue to be visible in greater redshifts. Make agn and quasar category.

  AGN - hot hydrogen

  star-forming - hot oxygen

  These explanations are for the SDSS telescope, but the principles still apply.

  PAGE 2 Galaxy Redshift Chart http://talk.galaxyzoo.org/#/boards/BGZ0000007/discussions/DGZ0000ulp?page=2

  PAGE 3 Spectra guide for Galaxy Zoo Talk http://talk.galaxyzoo.org/#/boards/BGZ0000001/discussions/DGZ0000ulp?page=3&comment_id=53fef2ee3d5a77490c0001b6

  Posted April 3, 2015 7:08 AM

• by ramberts

  Photometric estimate 3.342
  

  http://talk.galaxyzoo.org/?_ga=1.33618209.1877800780.1427850640#/subjects/AGZ000807u

  Posted April 3, 2015 11:47 AM

• by ramberts

  Known Quasar z 3.66
  http://talk.galaxyzoo.org/?_ga=1.42638757.1877800780.1427850640#/subjects/AGZ00087io
  

  Posted April 3, 2015 12:37 PM

• by Budgieye moderator in response to ramberts's comment.

  Great a quasar, quite far away.

  Posted April 3, 2015 10:23 PM

• by liometopum in response to dj tjitso's comment.

  For object AGZ00081hl
  z(spectroscopic) 0.69824
  http://simbad.u-strasbg.fr/simbad/sim-id?Ident=GOODS+J123732.81%2B621129.3

  Posted April 4, 2015 6:10 AM

• by ramberts

  Yes, Tools is pretty unreliable at this point from what I've seen. Anything with Z > 3 should have a much more compact core. Coloring is weird though because I have seen some blue LBG candidate at 3.4, with no red. LBG's are not quasars or AGN I don't think, so I'm quite confused on what to look for past a compact core (AGN, Quasars), somewhat compact core with signs of interaction (LBG's).

  Posted April 4, 2015 6:50 AM

• by ramberts

  http://www.galaxyzoo.org/#/examine/AGZ00082cj
  This is an LBG , seems like the color is too blue to me (but I've seen other candidate that were green with higher RS)...but it's the right type of core and everything I think. z=3.48. There is a photograph that matches perfectly to this galaxy in an article too, just with an instrumental green light, it's definitely the same one that is an LBG.
  http://arxiv.org/pdf/1009.1140v1.pdf
  

  Posted April 4, 2015 6:56 AM

• by ramberts

  LBG galaxy z = 4.6756 photometric estimate, these are hard to measure it sounds like from the article I read, the closer they get to z=4.8 (reddening of the galaxy) and nearby galaxies cause contamination making their redshift measurements harder to do.
  http://talk.galaxyzoo.org/?_ga=1.265870479.1877800780.1427850640#/subjects/AGZ00085z6

  

  From NED: A qualifier on the redshift. These are often taken from the published source (a colon ":" or a question mark "?" are common), but are sometimes added by NED to indicate a non-spectroscopic origin for the redshift -- "PHOT" for photometrically-measured redshifts, or "EST" for redshifts estimated by other methods.

  So I guess this is just a candidate for a high RS LBG until a new study comes out.

  Posted April 6, 2015 7:10 AM

• by ramberts

  http://talk.galaxyzoo.org/?_ga=1.105552131.1877800780.1427850640#/subjects/AGZ00087zz
  z=3.99 photometric estimate, confirmed AGN
  

  Posted April 6, 2015 9:38 AM

• by Budgieye moderator

  That looks quite red!

  Posted April 6, 2015 10:36 PM

• by liometopum

  Image AGZ000850b
  z(spectroscopic) =2.5426
  http://simbad.u-strasbg.fr/simbad/sim-id?Ident=GOODS+J033237.20-275528.2

  

  Posted April 7, 2015 3:05 AM

• by liometopum

  AGZ00080JB
  z(absorption) = 2.931
  http://simbad.u-strasbg.fr/simbad/sim-id?Ident=MODS+deep+1856

  Posted April 7, 2015 3:36 AM

• by ramberts

  http://talk.galaxyzoo.org/?&_ga=1.225692506.1523008579.1427367225#/subjects/AGZ0007zhk
  Z=3.2. Weird one spectroscopic RS measurement. not very compact compared to the other z >3 examples. NED has also listed this as a quasar. Makes me wonder if it is the purple dot that was measured?

  

  Posted April 8, 2015 12:42 PM

• by ramberts

  http://talk.galaxyzoo.org/?_ga=1.116793798.1306598192.1428494644#/subjects/AGZ00086bm
  Photometric estimates z = 5.36 and 5.35. Since it is so circular, is it likely to be a quasar? lbg? Hmmm

  

  Posted April 8, 2015 7:32 PM

• by ramberts

  Here's some examples of lbg at z>2

  

  Posted April 8, 2015 8:16 PM

• by ramberts

  

  I was surprised to see this one under 3. Only photoZ measurements though so far. z = 2.94 with the newest measurement from NED.
  http://talk.galaxyzoo.org/?_ga=1.100858497.1877800780.1427850640#/subjects/AGZ00087ve

  Posted April 9, 2015 5:32 AM

• by liometopum

  z(spectroscopic) = 4.1687 (based on one measurement)

  GOODS J033255.25-275022.5

  Image AGZ0008625

  

  Posted April 10, 2015 3:27 AM

• by ramberts

  Highest photoZ in this thread and what I've seen at GZ, z = 7.05 in GZ Tools, 6.96 in NED. I was going to just post specZ for now on, but that is impressively high!
  http://talk.galaxyzoo.org/#/subjects/AGZ00086za

  

  Papers since 2007 are classifying this as most likely a brown dwarf but no definitive confirmation... despite the multiple high photoZ values it will probably end up being a Z=0.

  Posted April 11, 2015 6:57 AM

• by ramberts

  I think it would be cool if we can find a spiral with a z >2! I think they would have to be very intense clumpy regions for it to show up in Hubble, and maybe a lot of colors mixed in, and might have to have some interaction going on with a neighbor.

  Posted April 11, 2015 7:09 AM

• by Budgieye moderator in response to ramberts's comment.

  Brown dwarf star sounds good. Anyone want to look it up in SIMBAD? ( star catalog) It is not very round,though.

  If it were a distant quasar, it should be red.

  Posted April 11, 2015 7:25 AM

• by ramberts

  First spiral I've seen at z > 2 (sadly photoZ), there's some out there that are more compact with a more grand design I'm sure with higher redshift in this survey I'm sure. Can't wait to see what some of the blobs that looks like elliptical blurbs that turn out to be highly detailed spirals in the James Webb ST like SDSS > HST. Maybe in this survey we'll find some with higher RS with a grand design, maybe not. There's a lot of untapped areas with not even spectroscopic measurement in NED at 1 arcmin...ie hundreds of galaxies in a very small area without a value that is considered scientifically accurate. That's crazy to me. Hubble was a huge advancement, but in the end will not go down in history as even a tiny drop in the bucket in terms of the universe. The bucket is a lot bigger than I realized before I looked at this site.
  Budgie, or a scientist, is there a chance, lets say if this is over 2 redshift, that there is much more detail that is invisible for some reason...on this particular galaxy?

  
  http://talk.galaxyzoo.org/?&&_ga=1.41858402.1310713284.1428668940#/subjects/AGZ0007y3m

  Posted April 11, 2015 10:32 AM

• by ramberts

  
  photoZ = 2.4
  http://talk.galaxyzoo.org/?_ga=1.79671636.1310713284.1428668940#/subjects/AGZ00081wt
  Spiral formation

  Posted April 12, 2015 7:14 AM

• by Budgieye moderator in response to ramberts's comment.

  A scientist can step in if I need correcting here.

  I think the spiral you have found is exactly what they are looking for see A brief history of clumpy galaxies http://blog.galaxyzoo.org/2010/05/25/a-brief-history-of-clumpy-galaxies/

  These clumpy galaxies may not have any more structure, since they are still forming. .A telescope with more resolution than Hubble would help. The James Webb Space telescope will have a 6.5-meter (21 ft) diameter mirror, so better than Hubble which I think is 2 meters.

  There will always be a choice of what wavelenths to show on an image. For example, SDSS records in 5 colours, but we get presented with only 3 on our images, because that is all our screens will take, the RGB channels. ( it comes down to the biology of our eyes too).
  We can choose to channel other colours onto the screen,, I think the FITS imaging software will allow you to do that.

  What do we lose? As we look at more distant galaxies, we lose the red colour and infrared as it gets stretched too far for the ccd detectors to image.. So red and dead ellipticals are the first to drop off the screen. Then we lose the blue starforming spiral galaxies. The ultraviolet UV light galaxies are good at z=2 but UV light is only formed by galaxies with very hot blue stars. So when we look at your spiral, we will not see the original red and blue light, those colours have been redshifted to a longer wavelength that Hubble can't detect. Don't quote me, I haven't done the redshift math here.

  We can see the UV light producing galaxies quite a distance.

  Quasars produce very short wavelength UV light, but eventually that will get stretched into infrared, and we can't see them.

  Radio telescope can pick up longer wavelengths. X-ray telescopes will pick up X-rays.

  So yes, there would be more information in other wavelengths of light , more than on this image.

  The nice thing about these images, is that the light wavelengths get represented as if the galaxy were right next door. So a blue spiral with a yellow nucleus still looks like that even though in reality, all the wavelengths are stretched into infrared.

  Posted April 12, 2015 7:28 AM

• by ramberts

  Great response, thank you so much I've learned a lot since coming here!

  Posted April 12, 2015 8:22 AM

• by ramberts

  I think this is the prettiest picture of a confirmed z > 4 galaxy (I know not as pretty as a lot of SDSS and closer Hubble, but for a high RS, no blobs and nice color, very solid and elegant looking). No red, must be an LBG. If someone can explain to me why LBG's with a high redshift can be green a lot, I would be pleased! It has to be something about interaction and the light emitted, but some are green and some are red. It looks like this one has been SpecZ = 4.146.
  http://talk.galaxyzoo.org/?&&&_ga=1.4085488.1310713284.1428668940#/subjects/AGZ0007yqt

  

  Posted April 12, 2015 8:44 AM

• by liometopum

  AGZ00087ka

  z(spectroscopic) 2.3166

  name: GOODS J033224.57-275115.8

  

  GOODS J033224.57-275115.8

  Posted April 12, 2015 10:36 PM

• by liometopum in response to dj tjitso's comment.

  I just looked this one up.The photometric z is way off from the spectroscopic z.

  AGZ00081hl

  z(spectroscopic) 0.69824

  Not Z=4.050000190734863

  http://simbad.u-strasbg.fr/simbad/sim-id?Ident=GOODS+J123732.81%2B621129.3
  

  Posted April 13, 2015 12:39 AM

• by liometopum in response to dj tjitso's comment.

  AGZ0007yiw

  TKRS 239

  z(spectroscopic) 0.84802

  The photometric z of 3.9700000286102295 is way off.

  

  TKRS 239 data link

  Posted April 13, 2015 12:56 AM

• by SpaceGawker

  

  4.4 redshift, first one I've found over 4.

  AGZ0008856

  Posted April 14, 2015 3:05 AM

• by ramberts

  

  http://www.galaxyzoo.org/#/examine/AGZ0007y0a
  Looks like an lbg, no RS data though

  Posted April 14, 2015 11:03 AM

• by ramberts

  
  http://talk.galaxyzoo.org/#/subjects/AGZ00082g5
  Clumpy LBG specz = 3.404

  Posted April 14, 2015 11:34 AM

• by liometopum

  AGZ00087wv

  z(spectroscopic) 2.5781

  GOODS J033231.88-274949.9
  data link

  

  Posted April 15, 2015 4:50 AM

• by Budgieye moderator

  red quasars and mergers paper, THE QUASARS LOOK LIKE SPIKEY STARS!

  http://arxiv.org/pdf/1504.02111v1.pdf p5

  http://arxiv.org/abs/1504.02111

  Major Mergers Host the Most Luminous Red Quasars at z ~ 2: A Hubble Space Telescope WFC3/IR Study

  Eilat Glikman (1), Brooke Simmons (2), Madeline Mailly (1), Kevin Schawinski (3), C. M. Urry (4), M. Lacy (5) ((1) Middlebury College, (2) Oxford University, (3) ETH Zurich, (4) Yale University, (5) NRAO Charlottesville)

  Posted April 15, 2015 8:08 PM

• by ramberts

  http://talk.galaxyzoo.org/?_ga=1.41748834.1306598192.1428494644#/subjects/AGZ00086k0

  

  Latest photoZ measurement 2.94

  Posted April 17, 2015 12:12 AM

• by ramberts

  

  specZ = 2.82

  http://talk.galaxyzoo.org/?_ga=1.45602916.1310713284.1428668940#/subjects/AGZ00086wl

  Posted April 17, 2015 8:40 AM

• by ramberts

  

  http://talk.galaxyzoo.org/?_ga=1.42368741.1310713284.1428668940#/subjects/AGZ00080cd

  SpecZ = 3.124

  Blue Lyman Break Galaxy

  Posted April 17, 2015 8:58 AM

• by ramberts

  

  Green LBG, photoZ = 2.757

  http://talk.galaxyzoo.org/?_ga=1.11826292.1310713284.1428668940#/subjects/AGZ000811j

  Posted April 18, 2015 4:12 AM

• by ramberts

  

  Newest photoZ = 3.223 for target

  Green blob I think might be GOODS-CDFS-MUSIC 70407 at .02 arcmin away or possibly target galaxy, photoZ = 5.89

  http://talk.galaxyzoo.org/?_ga=1.104757952.1310713284.1428668940#/subjects/AGZ00087i6

  Posted April 18, 2015 5:32 AM

• by ramberts

  

  2 conflicting SpecZ = 2.47 or z=2.67

  http://talk.galaxyzoo.org/?_ga=1.7313138.1310713284.1428668940#/subjects/AGZ00086e5

  Posted April 18, 2015 5:37 AM

• by ramberts

  

  Candidate z > 4

  http://talk.galaxyzoo.org/?_ga=1.11974004.1310713284.1428668940#/subjects/AGZ00086je

  Posted April 18, 2015 7:29 AM

• by Budgieye moderator in response to ramberts's comment.

  very interesting green blob! photoZ = 5.89 would be nice! I used the "view the raw data in different wavelengths" button in examine, and the green blob disappeared when the h filter is used, only locgical because there is no red in it.

  Survey: CANDELS 2-epoch
  Hubble ID: GDS_5244

  Posted April 18, 2015 8:41 AM

• by ramberts

  

  Lyman Break Galaxy, blue and green clumps. Lots of detail on this one. SpectroZ = 3.7.

  http://www.galaxyzoo.org/#/examine/AGZ00083a6

  Posted April 18, 2015 10:28 PM

• by liometopum

  AGZ000852x

  z(spectroscopic) 2.3279 (for the blue, or wavy, galaxy)

  data link

  

  Posted April 19, 2015 7:09 PM

• by Budgieye moderator

  Chart of colour of Lyman Break Galaxies in the GOODS S field.

  

  http://iopscience.iop.org/0004-637X/695/2/1163/article

  "Figure 6. Redshift distribution of the LBGs spectroscopically confirmed in the GOODS-S field. Upper panel: the redshift distribution of all sources at redshift beyond 3 discovered during the FORS2 campaign is shown. The dotted area represents the sources with lower spectral quality (QF = C). Middle panel: the redshift distribution (continuum line) of the FORS2 sample with the highlighted categories B435-, V606-, and i775-band dropouts (blue hatched "/" lines, green hatched "" lines, and red horizontal lines, respectively) is shown. Bottom panel: the redshift distribution has been calculated counting the number of sources in a redshift bin of 0.1 and moving it with a step of 0.003 up to redshift 6.5 (the shaded region is the FORS2 spectroscopic sample and the continuum line histogram include the spectroscopic data from the literature (see the text)). The three segments indicate the interval of cosmic time for dz = 0.1 at the mean redshift of each category."

  Posted April 19, 2015 11:32 PM

• by ramberts

  

  Awesome detail on this one. SpectroZ = 4.695. Lyman break galaxy, H alpha emitter.

  http://talk.galaxyzoo.org/?&_ga=1.19682040.1310713284.1428668940#/subjects/AGZ000824o

  Posted April 20, 2015 6:28 AM

• by liometopum

  AGZ00082fl
  z(spectroscopic) 2.2559
  data link

  

  Posted April 20, 2015 8:51 PM

• by ramberts

  

  SpectroZ = 4.047, H alpha emitter

  http://talk.galaxyzoo.org/?_ga=1.79607892.1310713284.1428668940#/subjects/AGZ00080q5

  Posted April 21, 2015 7:11 AM

• by ramberts

  

  PhotoZ = 2.88. Not sure how significant this is, but not visible on the i-band in the view wavelengths from examine.

  http://talk.galaxyzoo.org/?_ga=1.50690537.1310713284.1428668940#/subjects/AGZ00087tk

  Wonder if it's the same type of galaxy as this...

  http://talk.galaxyzoo.org/?_ga=1.7313138.1310713284.1428668940#/subjects/AGZ00086e5

  Posted April 21, 2015 8:08 AM

• by ramberts

  

  zSpec = 3.157 Clumpy AGN, sub-millimeter radio source

  http://talk.galaxyzoo.org/?_ga=1.42302821.1310713284.1428668940#/subjects/AGZ00080sb

  Posted April 21, 2015 8:28 AM

• by Peter_Dzwig in response to ramberts's comment.

  How did you get the spectrum to say its an h-alpha emitter? Examine doesn't give me much, certainly no spectrum that I can see and nothing in altenative wavelengths.

  Posted April 21, 2015 8:57 AM

• by ramberts in response to Peter Dzwig's comment.

  It's from this article:
  http://iopscience.iop.org/0004-637X/738/1/69/pdf/apj_738_1_69.pdf
  Excerpts: "All 64 of these galaxies have Sch1 greater than 0; thus, we call these 64 galaxies with positive residual in IRAC ch1 “HAE candidates.” We classify the subset of 47 galaxies with Sch1 > 10 as bona fide HAEs."

  The galaxy is N21565 and has an Sch1 of 8.22 and another measurement at 14.72 which would make it just slightly off the bona fide HAE criteria, but one of the strongest candidates.

  N31130 = http://www.galaxyzoo.org.s3.amazonaws.com/subjects/standard/goods_full_n_31130_standard.jpg
  That one has even stronger measurement and is considered a bona fide HAE according to the study. Sch1 = 13.41 and 13.02

  n7372 = http://www.galaxyzoo.org.s3.amazonaws.com/subjects/standard/goods_full_n_7372_standard.jpg. Also bonafide according to the study with Sch1 of 11.68 and 14.06

  s1478 = http://www.galaxyzoo.org.s3.amazonaws.com/subjects/standard/goods_full_s_1478_standard.jpg. Considered very strong candidate with measurements of 10.16 and 9.29

  s28132 = http://www.galaxyzoo.org.s3.amazonaws.com/subjects/standard/goods_full_s_28119_standard.jpg. Bona fide HAE with 11.81 and 19.48

  Very strange, all of our green clumpy galaxies in this thread with Zspec >4 were of the 76 galaxies included in this study. 5 Galaxies, most confirmed LBG's also are very strong candidates or confirmed for HAE's as well.

  Posted April 21, 2015 10:02 AM

• by ramberts

  

  Kind of looks spiraly, but probably disturbed. PhotoZ range = 2.07-3.56

  http://www.galaxyzoo.org/#/examine/AGZ000869w

  Posted April 21, 2015 11:11 AM

• by Peter_Dzwig in response to ramberts's comment.

  Thanks.

  Peter

  Posted April 21, 2015 6:54 PM

• by ramberts

  No problem 😃

  Posted April 22, 2015 3:31 AM

• by ramberts

  

  Specz = 3.1325, bluish cream colored, some green LBG.

  http://talk.galaxyzoo.org/?_ga=1.45528804.1310713284.1428668940#/subjects/AGZ000866g

  Similar in color to this one.

  

  And this one

  

  Posted April 22, 2015 9:14 AM

• by ramberts

  

  Another LBG similar to the rest of the light blueish ones. Photoz = 3.2

  http://talk.galaxyzoo.org/?_ga=1.16112758.1310713284.1428668940#/subjects/AGZ0007yld

  Posted April 23, 2015 2:42 AM

• by Budgieye moderator

  Nice galaxy they are are looking the same shade of green at these redshifts. Now about hydrogen alpha emission.

  First can I ask which hydrogen alpha emitting you are talking about. Sometimes in the references, the writers don't make it clear.

  There is the Balmer hydrogen alpha, which is , and the green gas outflow in M82 and nearby AGN. It is red in the visible light spectrum, and portrayed as green in SDSS.

  Then there is the Lyman hydrogen alpha, which is more powerful. It is UV light, but optical telescopes can see it if it greatly downshifted, such as z greater than about 2.

  There are less energetic hydrogen alphas, which are of interest to the radio telescope people.

  

  http://en.wikipedia.org/wiki/Hydrogen_spectral_series

  I would think that since these are high redshift galaxies, you are talking about Lyman hydrogen alpha.

  Saturday February 27, 2010 More hydrogen emission and quantum stuff http://www.galaxyzooforum.org/index.php?topic=277301.msg436944#msg436944

  I had thought that it took some powerful object like a black hole to produce Lyman hydrogen alpha emission. I am not sure why these Lyman Break Galaxies appear to have the Lyman hydrogen alpha light spread all over their galaxy. More reading for me, I guess.

  Posted April 24, 2015 7:56 AM

• by ramberts

  All of the green ones were HAEs. I have the galaxy IDs used in the article corresponded with the images.

  Posted April 25, 2015 8:08 PM

• by Budgieye moderator

  For blue Lyman break galaxies at z=3.5: the UV emission (Lyman hydrogen alpha emission is redshifted to become blue.

  For green Lyman break galaxies at z=5. the UV emission (Lyman hydrogen alpha emission) is redshifted to become green.

  For red Lyman break galaxies at z=6 (I don't think we have identified one of these yet) . the UV emission (Lyman hydrogen alpha emission) is redshifted to become red.

  

  EDIT reference on previous page.

  also EDIT: when I say "blue galaxy" I mean blue as we see them on our screens. The wavelength of light from the galaxy is redshifted in the infrared, and the Hubble programmers reconstruct the wavelength as blue. Same for green and red.

  Posted April 25, 2015 8:54 PM

• by ramberts

  Nice, I didn't realize the chart was from HAE.

  Posted April 25, 2015 10:38 PM

• by ramberts

  

  Zspec = 3.985 HAE, included in the article I provided for z=4 HAE galaxies, very strong candidate according to the criteria.

  http://talk.galaxyzoo.org/?_ga=1.108876866.1310713284.1428668940#/subjects/AGZ0007zyq

  Posted April 25, 2015 10:39 PM

• by ramberts in response to ramberts's comment.

  

  I believe the blueish green dot galaxy is GNS 0089 at .025 arcmin away. I haven't seen any galaxies like this before. It is at 3.25 photoZ estimate from 2011.

  http://www.galaxyzoo.org/#/examine/AGZ0007z5g

  Posted April 25, 2015 11:07 PM

• by ramberts

  

  Photoz = 4.235. Looks like an LBG, looks like all the HAE examples too...not sure if that means it is or not.

  http://www.galaxyzoo.org/#/examine/AGZ0007yf4

  Posted April 26, 2015 12:28 AM

• by ramberts

  I think there's enough LBG examples for z = 2-5 now. 2 is blue, 3 is light creamy blue, 3.8 - 5 is green, z>5 is ? for LBG's on this survey, I'm guessing it follows the chart above...so maybe z>5 turns into that dark green color from that one green blob, but from what I read on LBG's the color is dependent on the imaging settings, so not sure what they will look like on full depth in this survey. With LBG's there's wavelength drops (hence the break), so we might not even see them and maybe why we don't have any examples at z>5? But we should still be able to find some quasars (or maybe not, survey targeting towards clumpy galaxies?) Also there's not any information about what type of galaxy the green thing is in NED, just the photoz estimate.

  And the original OP galaxy that DJ Tijtso found looks accurate now that I've seen more examples, I think the only one on the first page that is accurate lol.

  

  Gonna try to post ellipticals, clumpy spirals, quasars and AGN high Z galaxies over 2...they are hard to find.

  Posted April 26, 2015 12:51 AM

• by ramberts

  

  This LBG is kind of interesting because it's sort of in the blueish area from examples I've seen and in this thread.

  specZ = 3.47 is usually blue, right on the border, has blueish and green features

  http://talk.galaxyzoo.org/?_ga=1.41269602.1310713284.1428668940#/subjects/AGZ00083as

  Kind of like this one at 3.7

  

  Posted April 26, 2015 6:02 AM

• by ramberts

  

  z = 2.647. This one is classified as an LBG AGN from this article as well as an HII emitter and x-ray source in NED. Maybe that's why it's a different color compared to a normal LBG which are usually like a sky blue or purple color at this redshift.

  http://articles.adsabs.harvard.edu/cgi-bin/nph-iarticle_query?2006MNRAS.373..217L&data_type=PDF_HIGH&whole_paper=YES&type=PRINTER&filetype=.pdf

  http://www.galaxyzoo.org/#/examine/AGZ00080zx

  Here's an excerpt for anyone that can make sense of it 😃
  "The X-ray spectrum of CXO J123719.8+620955 (=HDF−MD12), with a minimum of 20 counts per bin. The fitted model of Galactic absorbed power-law emission with intrinsic Ŵ = 1.92+0.51−0.44 and intrinsic column density NH = 1.65+1.15−0.85 × 1023 cm−2 is shown (90 per cent confidence range for two interesting parameters). The bottom panel shows the the data-to-model residuals in units of σ."

  Posted April 26, 2015 7:31 AM

• by ramberts

  Since we don't have a lot of galaxies above 2 and under 3 maybe get a few more examples.
  The bottom is classified as an LBG in NED. Above is zspec = 2.403, middle is zspec 2.5246 and bottom is zspec 2.2559 courtesy of liometopum.

  

  
  Posted by liometopum

  
  Posted by liometopum

  Top

  http://talk.galaxyzoo.org/?_ga=1.7172466.1310713284.1428668940#/subjects/AGZ0008399

  Middle

  http://talk.galaxyzoo.org/?_ga=1.15569654.1310713284.1428668940#/subjects/AGZ000850b

  Bottom

  http://talk.galaxyzoo.org/?&_ga=1.116906310.1310713284.1428668940#/subjects/AGZ00082fl

  Posted April 26, 2015 8:14 AM

• by ramberts

  

  Normal or LBG? Zspec = 2.599

  http://talk.galaxyzoo.org/?_ga=1.116251334.1310713284.1428668940#/subjects/AGZ00080o3

  Proto spiral like formation.

  Posted April 26, 2015 8:34 AM

• by ramberts

  Spirals at least 2 arms

  

  

  Coutesy of liometopum

  These are just baseline examples of spirals. I have seen some better that I haven't posted at around 2 with a more complete design, so I know there's some out there at high RS that are much cooler.

  Top z = 2.006 http://talk.galaxyzoo.org/?_ga=1.252139337.1310713284.1428668940#/subjects/AGZ000805k

  Middle Photoz =2.016 http://talk.galaxyzoo.org/?_ga=1.255226952.1310713284.1428668940#/subjects/AGZ0007y3m

  Bottoms z = 2.3729 http://talk.galaxyzoo.org/?_ga=1.7854578.1310713284.1428668940#/subjects/AGZ000852x Courtesyy of liometopum

  These are all considered too immature I think for spirals, I think it needs to be more of a grand design spiral.

  The farthest bona fide spiral galaxy is this one, I'm not even sure if it still is at only 2.18 redshift. I think we can find some this far out though (maybe we've alread passed dozens that surpassed this on the survey already!)...We already have some with 2 arms that are farther...what's the criteria? 3 arms and clumpy? Completely ignore the right BTW when looking for clumpy spirals, the right is just an artist painting of what it would like like if it were closer for Hubble or with the James Webb. I'm not 100% sure what to look for, but I don't think blues, reds or greens or a mixture thereof would be a bad bet.

  

  http://news.sciencemag.org/2012/07/hubble-spots-farthest-spiral-galaxy-ever-seen

  Posted April 26, 2015 8:50 AM

• by ramberts

  

  Something like this is probably a better example of what high redshift spirals will look like. But obviously with more arms and spiraly features.

  Posted April 26, 2015 11:48 AM

• by Budgieye moderator

  Some red starting to show on this galaxy - what is the ID?

  Posted April 26, 2015 9:12 PM

• by ramberts in response to Budgieye's comment.

  Whoops.

  http://www.galaxyzoo.org/#/examine/AGZ00081wt

  Posted April 27, 2015 12:29 AM

• by ramberts

  

  Zspec = 2.46. Is it a spiral, kinda looks like it, not sure, maybe with the James Webb will show it is or not. Classified as an AGN, so that's interesting too. 😃

  http://talk.galaxyzoo.org/?_ga=1.112177860.1310713284.1428668940#/subjects/AGZ0008108

  Posted April 28, 2015 8:00 AM

• by ramberts

  

  Zspec = 4.9827, Lyman Alpha Emitter galaxy. Interesting color, wasn't expecting this to be a high RS, (almost skipped right by it lol).

  http://talk.galaxyzoo.org/?_ga=1.239450307.1310713284.1428668940#/subjects/AGZ00084qt

  Posted April 28, 2015 8:24 AM

• by ramberts

  

  Possible LBG cluster, zoomed out picture, very cool. From Simbad: z(photometric) 4.490, tools has 4.301.

  http://talk.galaxyzoo.org/?&_ga=1.86892248.1310713284.1428668940#/subjects/AGZ0007yqz

  Posted April 28, 2015 9:40 AM

• by ramberts

  

  Similar to this? Maybe NED will update soon with this galaxy (or most galaxies, their 4 updates a year claim is definitely not right for Hubble galaxies)

  

  http://talk.galaxyzoo.org/?_ga=1.99201181.26552936.1430219354#/subjects/AGZ00081vg

  Posted April 28, 2015 5:54 PM

• by Budgieye moderator

  Nice bits of red showing in the green, but no ID 😃

  Posted April 28, 2015 6:47 PM

• by ramberts in response to Budgieye's comment.

  Fixed. Sorry I forget to post a link sometimes haha. I'm guessing both the target galaxy and the bottom galaxy are over 3...but just because they look far away doesn't mean they are, obviously...It's fun to guess sometimes though.

  Posted April 28, 2015 6:58 PM

• by ramberts

  

  Another cluster? Z = 4.058 with galaxies at 9 oclock and 5 oclock that look related.

  http://talk.galaxyzoo.org/?_ga=1.99201181.26552936.1430219354#/subjects/AGZ00080oa

  Posted April 28, 2015 7:00 PM

• by Budgieye moderator

  Another far out one! 😃

  Posted May 4, 2015 12:28 AM

• by Budgieye moderator

  Red CANDELS galaxy at z=7.7 EGS-zs8-1, but press release coloured it blue to make it look like young blue stars.

  

  http://www.nasa.gov/feature/goddard/astronomers-set-a-new-galaxy-distance-record

  A Spectroscopic Redshift Measurement for a Luminous Lyman Break Galaxy at z=7.730 using Keck/MOSFIRE

  http://arxiv.org/abs/1502.05399

  http://arxiv.org/pdf/1502.05399v2.pdf

  Posted May 6, 2015 6:54 AM

• by ramberts

  Interesting read, thanks for sharing 😃

  Posted May 7, 2015 5:52 AM

• by ramberts

  

  Top left is a quasar with a spectroscopic measurement of 5.186.

  http://talk.galaxyzoo.org/?&_ga=1.147340599.1250538510.1430670718#/subjects/AGZ0007zou

  Posted May 7, 2015 6:20 AM

• by Budgieye moderator

  Great find of a green quasar. Now hoping for a red one. Starting to fill up this redshift chart.

  http://talk.galaxyzoo.org/#/boards/BGZ0000001/discussions/DGZ0000ulp?page=4

  Posted May 7, 2015 7:11 AM

• by ramberts

  Check this one out for your chart, not sure where it belongs but doesn't really look like the other z=5 examples we've collected.

  http://talk.galaxyzoo.org/?_ga=1.239450307.1310713284.1428668940#/subjects/AGZ00084qt

  Posted May 7, 2015 7:54 AM

• by Budgieye moderator

  Not sure about the distance. Maybe it should look clumpy? It has one of those redshifts where the quality is blank. Not sure what that means either.

  GOODS J033233.98-274039.0 03h32m34.0s -27d40m39s G >30000 4.982700 : 26.0V 0.000 9

  

  Posted May 7, 2015 8:40 PM

• by Budgieye moderator

  Nice green image, 9/10

  green blobs photo z=4.7

  http://talk.galaxyzoo.org/#/subjects/AGZ00085u6

  blue and red galaxy z=0.9

  Posted May 9, 2015 7:28 AM

• by ramberts

  

  Elliptical z = .773, green LBG z = 4.88. My question is, I'm really confused why the elliptical galaxy light is disturbed by the LBG. It seems like it should almost overlap it, but instead half of it seems hidden because of the LBG's light? Really weird to me. Budgieye, would you happen to know why half of the elliptical seems invisible due to the LBG that is billions of LY's away?

  http://talk.galaxyzoo.org/?&_ga=1.242539778.1250538510.1430670718#/subjects/AGZ000849f

  Posted May 11, 2015 5:05 AM

• by Budgieye moderator

  I think that galaxies having their light dimmed by neighbouring galaxies is an artifact. These images are taken apart and put back together again in an amazing (and almost horrifying) way, and sometimes it leaves artifacts. If you look carefully, you can see the (black) ring extend around the whole green galaxy. There is another brownish grey disk the same size as the nucleus and just above it, which is probably where a cosmic ray was cut out and an averaged colour inserted in its place.

  Technical info http://spiff.rit.edu/classes/phys445/lectures/median/median.html (3 picute

  There are also also many algorithms applied to images... masking, .... um....I'm not an expert on them.

  EDIT: here is some of the processing done on the fancy Hubble images. http://hubblesite.org/gallery/behind_the_pictures/index.php

  Posted May 11, 2015 11:41 AM

• by ramberts in response to Budgieye's comment.

  Interesting thanks!

  Posted May 11, 2015 10:18 PM

• by ramberts in response to Budgieye's comment.

  Here's some comments from an article about these galaxies.

  http://www.aanda.org/articles/aa/full/2005/16/aa1532/aa1532.html

  "Figure 13 shows a peculiar system of three sources: two emission-line sources above (~1.5 arcsecond) and below (~3 arcsecond) the main galaxy GDS J033228.88-274129.3, clearly visible in the ACS color image and in the two dimensional spectrum. The same target has been observed in two different masks adopting the same orientation of the slits. The total exposure time is $\simeq$43 ks. The extracted one dimensional spectra are shown in the right side of the Fig. 13.

  The main galaxy GDS J033228.88-274129.3 has a redshift z=0.733 with both emission and absorption lines measured (quality flag "A''): [O II]3727, MgI, Ca H and K, g-band, etc. The bottom object (GDS J033228.84-274132.7) shows a solo-emission line at 7052 Å (see the 1-D spectrum), and is not detected in the ACS B band, we interpret this line as Ly$_{\alpha }$ at z=4.800 with quality "C''.

  The source above GDS J033228.88-274129.3 is most probably a Ly${\alpha }$ emitter at redshift z=4.882 (quality "B''). The spectrum has been extracted subtracting the contamination of the tail of the main galaxy. After the subtraction the shape of the spectrum shows the blue cut-off and the Ly${\alpha }$ forest continuum break, typical of the LBGs."

  

  Posted May 12, 2015 2:06 AM

• by Budgieye moderator

  Nice! A clear example of how a Grism spectra works! The prism was positioned at an angle to get all three in the same run and the light from all 3 object was put through a Grism prism which smears out light This is how the wavelengths of light are separated out into a spectrum.. The two closer objects have their spectra mixed up together. You can see the distant galaxy's Lyman alpha emission lurking in the orange galaxy spectra, although slightly off-center. The galaxy below is clear of the orange galaxy and the spectrum is separate, and it has only one peak, nothing else.

  The main galaxy has a Oii peak, indicating that there is star formation happening. If it has a Lyman peak, it would be off the image to the left. Lyman UV light is difficult to detect in "closer" galaxies, because it requires different equipment.

  The two distant green galaxies have Lyman-alpha emission, so also lots of star formation. The galaxy at the top is further away, as it light has been redshifted further to the right.

  Posted May 12, 2015 8:07 AM