Spectroscopic studies of Wolf-Rayet stars with absorption lines. II - The WN8 standard star HD 177230

Other

Scientific paper

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

29

Absorption Spectroscopy, Binary Stars, Emission Spectra, Hot Stars, Stellar Spectra, Wolf-Rayet Stars, Balmer Series, Electron Scattering, Helium Ions, Hydrogen, Milky Way Galaxy, Nitrogen Ions, Photometers, Spectroscopic Telescopes, Stellar Envelopes

Scientific paper

Coude observations indicate that HD 177230 is probably not a binary. The 15 km/s scatter in the radial velocities places stringent constraints on possible periods and orbital inclinations. There is a tantalizing hint of possible variability in the emission line strengths. The spectrum of this WN8 standard contains several surprises. Four entire N ionization states are represented, with emission lines of N II, N III, N IV, and N V present. The stronger He I triplet lines show a classical Beals Type III P Cygni profile, which is interpreted as an indication that the envelope is fairly dense compared to other WN8 stars. Unlike many other late WN stars, HD 177230 does not appear to have an appreciable amount of hydrogen present in its envelope.

No associations

LandOfFree

Say what you really think

Search LandOfFree.com for scientists and scientific papers. Rate them and share your experience with other people.

Rating

Spectroscopic studies of Wolf-Rayet stars with absorption lines. II - The WN8 standard star HD 177230 does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Spectroscopic studies of Wolf-Rayet stars with absorption lines. II - The WN8 standard star HD 177230, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Spectroscopic studies of Wolf-Rayet stars with absorption lines. II - The WN8 standard star HD 177230 will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFWR-SCP-O-753772

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.