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by Ptd
How come this one has nothing in the middle? Also a candidate for "O" in the #alphabet?
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by alan1001
The nucleus of the galaxy is on the left. Its shape is disturbed, possibly by a previous collision or close encounter with another galaxy
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by elizabeth_s
cool cool NGC 0985
MRK 1048Posted
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by Budgieye moderator
also https://talk.galaxyzoo.org/#/subjects/AGZ0001r30
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According to NED Notes a collisional-ring galaxy with apparent double nucleus, one of the two being the intruder galaxy.
From NGC 985 NED Notes;
NGC 985 (Fig. 7a) is one of the largest rings known (about 30 kpc
diameter). It has no visible nearby companion but the bright knot seen in
projection on the ring may be the intruder galaxy. Its light distribution
follows an r^1/4^ law typical of a nuclear bulge or an elliptical galaxy
(Appleton & Marcum 1993, hereafter AM93). Moreover, near-infrared
observations (AM93) reveal a second nucleus about 3" from the first one,
from which the twisted western arm originates. That suggests that NG6 985
is a composite system of two galaxies and therefore fits into the class
of collisional ring galaxies. The bright knot hosts a Seyfert 1 nucleus
that largely contributes to the X-ray, UV and far-infrared emission of
NGC 985 (Ghigo et al. 1983; Wu et al. 1983; Rodriguez Espinoza & Stanga
1990, hereafter R-ES90). Bright HII regions have been detected in the
ring (R-BS90). http://ned.ipac.caltech.edu/cgi-bin/ex_refcode?refcode=1995A%26A...298..743H
Radio observations by Appleton & Ghigo (in preparation) confirm
the earlier suggestions (Rodriguez-Espinosa & Stanga 1990; Appleton & Marcum- that the galaxy contains a double nucleus. As discussed by Appleton &
Marcum (1993), it is quite likely that the offset bulge component, which has an
R_1/4_ luminosity profile, is part of the intruder galaxy seem projected
against the ring. These authors showed that there appears to be two nuclei in
NGC 985, again supporting the view that it is a composite system. http://ned.ipac.caltech.edu/cgi-bin/ex_refcode?refcode=1997AJ....113..201A
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by zoob1172
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by Budgieye moderator
Great information Ghost_Sheep_SWR. I'll put it in the Index so I don't lose it.
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Great, still wasn't sure if the yellow object is a foreground star or supposed to be the second nucleus. But looks about right when comparing with the mention of 3" separation I think?
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