The nitrogen and silicon abundance of SdO-stars

Details The nitrogen and silicon abundance of SdO-stars The nitrogen and silicon abundance of SdO-stars

Apr 1980

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1980esasp.157..305s&link_type=abstract

The second European International Ultraviolet Explorer (IUE) Conference, held 26-28 March 1980 in Tübingen, West Germany. Edited

Astronomy and Astrophysics

Astronomy

16

Iue, O Stars, Radiative Transfer, Stellar Atmospheres, Thermodynamic Equilibrium, Ultraviolet Astronomy, Abundance, Atmospheric Turbulence, Carbon, Line Spectra, Nitrogen, Oxygen, Silicon

Scientific paper

Abundances of nitrogen and silicon were determined by means of multi-level calculations for three helium-rich subluminous O-stars, HD 49798, HD 127493 and BD+75 deg 325. Analysis of the line spectra of a III and Si IV yields three results: microturbulence is small, i.e., less than 10 km sec; the silicon abundance is solar, and nitrogen is strongly overabundant. Taking into account the carbon-deficiency of these stars and the fact that no lines of oxygen are seen in the spectra, it is concluded that CNO cycle-processed material is involved.

Affiliated with

Also associated with

No associations

Rating

The nitrogen and silicon abundance of SdO-stars 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 The nitrogen and silicon abundance of SdO-stars, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and The nitrogen and silicon abundance of SdO-stars will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1698373