Messy Merger?

Looks like the merging pretty much wiped out the discs assuming they had them at one point...

Posted June 15, 2013 2:31 AM

Posted June 15, 2013 11:05 AM

by Budgieye moderator

Is this a merger? or a voorwerpje? What is red at these redshifts?

see Astrophysics for Galaxy Zoo Talk Galaxy Redshift Chart http://talk.galaxyzoo.org/#/boards/BGZ0000001/discussions/DGZ0000ulp?page=2

Some PhotoZ of these galaxies, remember that they can be wrong and can have huge errors. They don't seem to help, the Photoz are inconclusive.

IRAS 23403+3500 IRAS23403+3500
enter image description here

http://skyserver.sdss.org/dr8/en/tools/explore/obj.asp?id=1237680505048269108

enter image description here

Bright yellow nucleus objID 1237680505048269108 z 0.090632
zErr 0.019182

http://skyserver.sdss.org/dr8/en/tools/explore/obj.asp?id=1237680505048269108

enter image description here
Purple arm objID 1237680505048269111
z 0.099199
zErr 0.019626

http://skyserver.sdss.org/dr8/en/tools/explore/obj.asp?id=1237680505048269111

enter image description here
Purple knot objID 1237680505048269109
z 0.093099
zErr 0.015424

http://skyserver.sdss.org/dr8/en/tools/explore/obj.asp?id=1237680505048269109

The red colour may come from oxygen as a OIII object (a pea) or from hydrogen, as a quasar or voorwerpje (AGN cloud)

3.3 AGN-illuminated clouds, voorwerpje http://talk.galaxyzoo.org/#/boards/BGZ0000001/discussions/DGZ0000wrb?page=3&comment_id=53d8b8f5db90c76710000f90

"Possible Colours:

redshift emission lines colour

0.0-0.07 OIII blue

0.0-0.07 NII+Hα green to yellow

0.0-0.07 OIII+NII+Hα turquoise

0.07-0.1 OIII turquoise to green

0.07-0.1 NII+Hα red

0.07-0.1 OIII+NII+Hα pink to yellow

Hunting for gas clouds illuminated by AGN http://wavwebs.com/GZ/voorwerpje/Hunt.cgi

The green galaxy beneath may or may not be close. The photoz are inconclusive.

enter image description here
objID 1237680505048269110
z 0.073554
zErr 0.020686

http://skyserver.sdss.org/dr8/en/tools/explore/obj.asp?id=1237680505048269110

enter image description here
objID 1237680505048269115
z 0.151985
zErr 0.14546

http://skyserver.sdss.org/dr8/en/tools/explore/obj.asp?id=1237680505048269115

more ObjID numbers

http://skyserver.sdss3.org/dr8/en/tools/explore/obj.asp?id=1237680505048269115

http://skyserver.sdss3.org/dr8/en/tools/explore/obj.asp?id=1237680505048269108

http://skyserver.sdss3.org/dr8/en/tools/explore/obj.asp?id=1237680505048269109

1237680505048269115
1237680505048269108
1237680505048269109

Biggest cosmic trainwrecks - Mergers http://www.galaxyzooforum.org/index.php?topic=567.msg619457 #msg619457

outside dr7 footprint.

enter image description here other galaxies nearby are normal colours, so not an artifact.

Posted July 21, 2015 6:51 AM

by NGC3314 scientist

(Budgieye pointed me this way)

Interesting candidate - from galaxies where I've seen spectra, that purple color usual means strong [O III] and H-alpha at redshifts near z=0.1 (so H-alpha falls in the i band and the r band misses strong emission lines). Alas, even with DR12 there are no spectra at all in this multiple system. The question remains of whether the emission lines are driven by star formation of an AGN. Putting this on the candidate list for any opportunity to get more data...

Posted July 21, 2015 2:54 PM

by Budgieye moderator

Thank you Professor Keel.

Posted July 22, 2015 7:39 AM