Explanation

• by Juliosalotti

  Could someone notice if that object close to the middle of the galaxy is a merger or just a normal part of the galaxy?

  Posted January 14, 2017 2:02 AM

• by Budgieye moderator

  Hmmm...possibly a passing asteroid, it doesn't show the typical 3 colours of asteroid, but perhaps it is washed out by the glare of the galaxy, but it does show 3 parts, like an asteroid does in SDSS. Anybody else have any ideas?

  see 8.3 asteroids, ice worlds, Planet Nine https://talk.galaxyzoo.org/#/boards/BGZ0000001/discussions/DGZ0000wrb?page=8

  

  http://skyservice.pha.jhu.edu/DR9/ImgCutout/getjpeg.aspx?ra=57.05151485&dec=39.35301326&scale=0.396127&width=512&height=512&opt=&query=

  http://skyserver.sdss.org/dr9/en/tools/explore/obj.asp?ra=57.05151965236412&dec=39.352993617464186

  

  http://skyservice.pha.jhu.edu/DR9/ImgCutout/getjpeg.aspx?ra=57.05151485&dec=39.35301326&scale=0.049515875&width=512&height=512&opt=&query=

  PanSTARRS doesn't help, unless someone looks at the FITS files. I really must learn how to do them, but it is still 4th on my list of things to do.

  http://ps1images.stsci.edu/cgi-bin/fitscut.cgi?red=/data/ps1/node03/stps03.2/nebulous/36/40/7172860453.gpc1%3ALAP.PV3.20140730%3A2015%3A01%3A17%3ARINGS.V3%3Askycell.2096.081%3ARINGS.V3.skycell.2096.081.stk.4197090.unconv.fits&blue=/data/ps1/node16/stps16.2/nebulous/6d/22/7171441378.gpc1%3ALAP.PV3.20140730%3A2015%3A01%3A16%3ARINGS.V3%3Askycell.2096.081%3ARINGS.V3.skycell.2096.081.stk.4186310.unconv.fits&green=/data/ps1/node06/stps06.2/nebulous/08/64/5906180733.gpc1%3ALAP.PV3.20140730%3A2015%3A01%3A16%3ARINGS.V3%3Askycell.2096.081%3ARINGS.V3.skycell.2096.081.stk.4191311.unconv.fits&x=57.051500&y=39.353000&size=240&wcs=1&asinh=True&autoscale=99.750000

  another nearby galaxy doesn't show same blob

  

  http://skyservice.pha.jhu.edu/DR9/ImgCutout/getjpeg.aspx?ra=56.91589011&dec=39.34681526&scale=0.2&width=200&height=200&opt=G

  Posted January 14, 2017 9:28 AM

• by Ghost_Sheep_SWR

  For me the PanSTARRS colour image does seem to help. I see a bright white galaxy bulge, and on the position of the object in SDSS clearly a more yellow perfect round object which is very likely a bright star.

  Slightly better visible in the PanSTARRS g band cutout:

  http://ps1images.stsci.edu/cgi-bin/ps1cutouts?pos=57.0515+39.3530&filter=color&filter=g&filter=r&filter=i&filter=z&filter=y&filetypes=stack&auxiliary=data&size=240&output_size=0&verbose=0&autoscale=99.500000&catlist=

  There are also two sources included in GAIA DR1, not clear to me if this means a binary or that the galaxy nucleus was included by misstake.

  http://legacysurvey.org/viewer?ra=57.0506&dec=39.3541&zoom=14&layer=sdssco&gaia-dr1

  Posted January 14, 2017 10:28 AM

• by c_cld

  PanSTARRS-1 http://ps1images.stsci.edu/cgi-bin/ps1cutouts?pos=57.0515+39.353&filter=color&filter=g&filter=i&filter=y&filetypes=stack&size=180&output_size=512&verbose=0&autoscale=99.5

  stack filters g,i,y

  could be a foreground star as same in zoomed out field

  

  Posted January 14, 2017 12:00 PM

• by Juliosalotti

  I see. Sorry for the delay, but work kept me busy and I just noticed how to find this again. Thanks for the help! With those images, it really sems like something on the foreground. At something I thought it could be a merger, but with some strange shape. And I didn't know about the "3 colours of asteroid[s]". Interesting!

  Posted February 2, 2017 2:14 PM