Is that a merger? =)
-
Is that a merger? It looks smooth but it has two bulges =)
Posted
-
by klmasters scientist, admin
Looks more like a knot of star formation in the ring too me - I admit it's awfully big though.
Posted
-
by klmasters scientist, admin
That is one super odd looking galaxy. Here is the 3 colour image - this is the g-band (or bluest) of the filters.
Posted
-
by klmasters scientist, admin
Actually both bright knots have spectra taken by the Sloan Digital Sky survey, and both have the same distance implied from the redshift of those spectra (z=0.06). They also both look like they are made up primarily of old stars - the bright knot in the ring is definitely not a star formation region thenβ¦.
So I think my best guess is a minor merger in the process of disintegrating. Very interesting.
Links to the spectra:
Centre of galaxy: http://skyserver.sdss.org/dr12/en/tools/explore/Summary.aspx?id=1237658311866712170
Bright knot in the ring: http://skyserver.sdss.org/dr12/en/tools/explore/Summary.aspx?id=1237658311866712171
Posted
-
by klmasters scientist, admin
Odd enough that this one just got sent to the science team list. Thanks for pointing it out. π
Posted
-
by bamford scientist
This is nice! Notice that the ring and the knot are slightly bluer, so a bit younger and/or lower-metallicity, than the central galaxy. It looks like a tidal stream being pulled out of a satellite galaxy.
Posted
-
by mlpeck
FWIW this galaxy is in Keel's overlap catalog, so this isn't the first time it has caught the eye of GZ scientists. Author number eight of that paper is K.L. Masters by the way.
Posted
-
by Peter_Dzwig
Is there a link to the Keel catalogue and/or paper?
Posted
-
by JeanTate in response to Peter Dzwig's comment.
The Overlapping Galaxy Pairs part of the Galaxy Zoo Data webpage has everything: link to the paper, .txt, javascript, and .pdf versions of the catalog, and 1-page-per-object PDFs (they are very cool!)
Posted
-
by Capella05 moderator
Thanks Jean π
Posted