Galaxy Zoo Talk

Possible unknown collisional ring galaxy

by Ghost_Sheep_SWR

It is in the background of collisional ring galaxy NGC 4774 at 1 o'clock, and likely overlooked because of that.

Below image from Title: Atlas and Catalog of Collisional Ring Galaxies from Madore et al shows that the resolution is not good enough to image it properly. It doesn't look like it can be associated with NGC 4774 but difficult to say without spectrum.

http://adsabs.harvard.edu/cgi-bin/bib_query?2009ApJS..181..572M

Candidate collisional ring galaxy

http://skyserver.sdss.org/dr9/en/tools/chart/chart.asp?ra=193.27732861&dec=36.81981929

Posted February 16, 2017 6:37 PM

Subject: AGZ000em00

Comments

by johnadams231

big mess

Posted February 10, 2017 12:01 AM
by CeciliaB

NGC 4774 is a collisional ring galaxy. The collider is the small galaxy above it, see link.

Posted February 10, 2017 2:49 PM
by CeciliaB

http://skyservice.pha.jhu.edu/DR9/ImgCutout/getjpeg.aspx?ra=193.27732861&dec=36.81981929&scale=0.19806&width=512&height=512&opt=&query=

Posted February 10, 2017 2:53 PM
by ROSSROSSROSS

cool tanks @CeciliaB

Posted February 15, 2017 10:30 PM
by Ghost_Sheep_SWR

Is that a second ring at 1 o'clock btw? Smaller or background

Posted February 16, 2017 9:14 AM
by CeciliaB

Yes, it certainly looks like a ring, but of course it's impossible to say if it was formed at the same time as the collision.

Posted February 16, 2017 6:02 PM
by Ghost_Sheep_SWR

Yeah, it is not even a photometric object in SDSS. I think this may be an overlooked #collisional-ring ( associated or not with NGC 4774)

Posted February 16, 2017 6:32 PM
by ChronoTrigger

What a strange object. How many galaxies do you think collided to make this? #starforming #ring #merger

Posted February 17, 2017 8:05 AM
by CeciliaB

Collisional Ring galaxies are formed when a smaller galaxy passes through the center of a larger galaxy.

Posted February 18, 2017 3:33 PM
by Ghost_Sheep_SWR

AGZ0002kdg

Posted February 17, 2018 11:57 AM