Wolf-Rayet stars in the barred spiral galaxy NGC 5430

• by Budgieye moderator

  This is an area studied by one of the Galaxy Zoo scientists.

  MRK 0799a

  A strong emission knot 20 arcsec southeast of the nucleus of NGC 5430
  shows spectral features attributable to Wolf-Rayet stars. If they are
  like those seen nearby, the knot contains 30,000 Wolf-Rayet stars, as
  well as a still larger number of O stars. Abundances of heavy elements
  in the ionized gas around the stars may be lower than expected for
  such a galaxy. A scenario is proposed in which this object results
  from the collision of a dwarf irregular galaxy with the disk and bar
  of NGC 5430 and ensuring star formation.

  http://articles.adsabs.harvard.edu//full/1982PASP...94..765K/0000767.000.html There is a spectrum.

  

  http://skyservice.pha.jhu.edu/DR9/ImgCutout/getjpeg.aspx?ra=210.19715198&dec=59.32407854&scale=0.2&width=200&height=200&opt=G

  http://skyserver.sdss.org/dr9/en/tools/explore/obj.asp?ra=210.19707391059814&dec=59.32412373487594

  

  http://skyserver.sdss.org/dr9/en/tools/explore/obj.asp?id=1237655463774191764

  1237655463774191764

  https://en.wikipedia.org/wiki/Wolf–Rayet_star

  Posted December 26, 2016 9:54 AM