Twin galaxies from interaction?!

• by liometopum

  This galaxy has an almost mirror-image twin, complete with blue spot!

  You need to add to the width in the large SkyServer image to view it properly. It is quite striking.

  Posted February 2, 2015 3:24 AM

• by Budgieye moderator

  Yes, wow

  

  http://skyservice.pha.jhu.edu/DR8/ImgCutout/getjpeg.aspx?ra=5.07908008&dec=-2.65311254&scale=0.25&width=750&height=512&opt=&query=

  Posted February 2, 2015 3:40 PM

• by liometopum

  I checked Simbad, using my new (thanks to you) skills, and found:

  Main object (on left) z=0.0199 http://skyserver.sdss3.org/dr8/en/tools/explore/obj.asp?id=1237678880485998722
  MCG-01-02-004 -- Emission-line galaxy

  ---

  the Twin is z=0.020237 http://skyserver.sdss3.org/dr8/en/tools/explore/obj.asp?id=1237678880485933199
  IC 12 -- Emission-line galaxy

  Separation is about z=0.000337
  That is a little less than twice the distance between the Milky Way and the Andromeda galaxy, if I did it right.

  So the Twins are very close indeed.

  Posted February 3, 2015 9:48 PM

• by Budgieye moderator

  Next, measure the angular distance

  7.3 Measure distance, size http://talk.galaxyzoo.org/#/boards/BGZ0000001/discussions/DGZ0000wrb?page=7&comment_id=53d8bb6c0d43f776b00010af

  Posted February 4, 2015 7:52 AM