Deep violet color

• by RichardHB

  Hello.

  Why this galaxy has a deep violet color?

  (http://skyserver.sdss.org/dr14/en/tools/explore/Summary.aspx?id=1237650370481029421)

  Thank you.

  Posted November 24, 2017 5:43 AM

• by Budgieye moderator

  It is actually magenta, using scientific terminology,, which is red + blue.

  Magenta is found in

  • spectroscopic binary star pair, one red and one blue 4.8 spectroscopic binary stars https://talk.galaxyzoo.org/#/boards/BGZ0000001/discussions/DGZ0000wrb?page=4

    "Purple peas" 3.8 Green peas, compact starburst, Blue compact starburst , OIII objects https://talk.galaxyzoo.org/#/boards/BGZ0000001/discussions/DGZ0000wrb?page=3&comment_id=53d8b93a0d43f77bb6000f98

    Extremely distant spiral or quasar galaxies of z=1. Often lensed galaxies are magenta. http://cas.sdss.org/dr7/en/tools/explore/obj.asp?id=587724650875453828 http://www.galaxyzooforum.org/index.php?topic=275811.msg355407#msg355407

  Since this is faint, and has a redshift photoz of 0.5 which is still a bit close, but maybe the photoz is slightly wrong...

  I would think distant galaxy.

  Galaxy Redshift Chart https://talk.galaxyzoo.org/#/boards/BGZ0000007/discussions/DGZ0000ulp?page=2

  

  http://skyserver.sdss.org/dr14/en/tools/explore/Summary.aspx?id=1237650370481029421

  photo z 0.563731
  zErr 0.121983

  Posted November 24, 2017 7:05 AM