Half blue galaxy

by Budgieye moderator

The galaxy is very blue in DECaLS and Pan-STARRS as well.

enter image description here SDSS

http://skyservice.pha.jhu.edu/DR9/ImgCutout/getjpeg.aspx?ra=10.08025952&dec=1.46305908&scale=0.049515875&width=512&height=512&opt=&query=

white and blue divsion is parallel with field lines in SDSS

enter image description here SDSS

http://skyservice.pha.jhu.edu/DR9/ImgCutout/getjpeg.aspx?ra=10.08025952&dec=1.46305908&scale=0.1980635&width=512&height=1000&opt=F&query=&Fields=on

http://skyserver.sdss.org/dr9/en/tools/explore/obj.asp?ra=10.080292184589831&dec=1.4630590450890195

But there is a blue area in DECaLS, maybe a starforming area?

enter image description here DECaLS

http://legacysurvey.org/viewer/jpeg-cutout/?ra=10.0801&dec=1.4619&zoom=14&layer=decals-dr3

enter image description here DECaLS

http://legacysurvey.org/viewer?ra=10.0801&dec=1.4623&zoom=14&layer=decals-dr3

Posted September 1, 2017 8:17 AM

by CeciliaB

Thanks!

The white and blue division is just as obvious in DECaLS. It would be, I suppose. DECaLs DR3 residuals shows an interesting (and amusing) image with just one white and one blue dot.

Could the division of colours also be caused by the galaxy being a binary system? The galaxy is in a catalog of binary compact objects in NED. That might explain why the starforming area is mostly on one side.

It's a pity that the galaxy is so fuzzy. It would have been very interesting to have a closer look. The colour is stunning !

Posted September 1, 2017 4:23 PM

by Budgieye moderator

You might put it on the Objects that need more research https://talk.galaxyzoo.org/#/boards/BGZ0000004/discussions/DGZ0000ycq

Posted September 1, 2017 6:48 PM