Galaxy Zoo Talk

O

  • Ptd by Ptd

    How come this one has nothing in the middle? Also a candidate for "O" in the #alphabet?

    Posted

  • alan1001 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

    Posted

  • elizabeth_s by elizabeth_s

    cool cool NGC 0985
    MRK 1048

    Posted

  • Budgieye by Budgieye moderator

    also https://talk.galaxyzoo.org/#/subjects/AGZ0001r30

    Posted

  • Ghost_Sheep_SWR by Ghost_Sheep_SWR

    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

    1. 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

    All Notes: http://ned.ipac.caltech.edu/cgi-bin/datasearch?search_type=Note_id&objid=55371&objname=NGC 0985&img_stamp=YES&hconst=73.0&omegam=0.27&omegav=0.73&corr_z=1&of=table

    Posted

  • zoob1172 by zoob1172

    #star

    Posted

  • Budgieye by Budgieye moderator

    Great information Ghost_Sheep_SWR. I'll put it in the Index so I don't lose it.

    Posted

  • Ghost_Sheep_SWR by Ghost_Sheep_SWR

    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?

    enter image description here

    Posted