Spectral analysis of the high-gravity extreme helium star LS IV+6 deg 2

Details Spectral analysis of the high-gravity extreme helium star LS IV+6 deg 2 Spectral analysis of the high-gravity extreme helium star LS IV+6 deg 2

Mar 1998

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1998mnras.294..391j&link_type=abstract

Monthly Notices of the Royal Astronomical Society, vol. 294, p. 391

Other

17

Peculiar Stars, Stellar Atmospheres, Spectrum Analysis, Stellar Evolution, Helium, Stellar Composition, Hydrogen, O Stars, B Stars, Variability, Photosphere

Scientific paper

The optical spectrum of the early B hydrogen-deficient star LS IV+6 deg 2 has been analyzed. It is hottest high-gravity extreme helium star (EHe) yet studied. The He I spectrum shows all predicted permitted and forbidden transitions in absorption. LS IV+6 deg 2 is a comparatively metal-rich EHe star; abundances of C, N, O, Ne, Mg, Al, and P are typical of other EHes, whilst Si and S are somewhat deficient. With the surface parameters given, LS IV+6 deg 2 lies close to the boundary of the helium star pulsation instability finger near Teff of about 27,000 K. Available data indicate that the radial velocity is variable, but give no indication of amplitude or period.

Affiliated with

Also associated with

No associations

Rating

Spectral analysis of the high-gravity extreme helium star LS IV+6 deg 2 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 Spectral analysis of the high-gravity extreme helium star LS IV+6 deg 2, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Spectral analysis of the high-gravity extreme helium star LS IV+6 deg 2 will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-958552