Copernicus ultraviolet observations of mass-loss effects in O and B stars

Details Copernicus ultraviolet observations of mass-loss effects in O and B stars Copernicus ultraviolet observations of mass-loss effects in O and B stars

Nov 1976

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1976apjs...32..429s&link_type=abstract

Astrophysical Journal Supplement Series, vol. 32, Nov. 1976, p. 429-465.

Astronomy and Astrophysics

Astronomy

390

A Stars, B Stars, Mass Flow, O Stars, Oao 3, Stellar Spectra, Ultraviolet Spectroscopy, Absorption Spectra, Energy Spectra, Far Ultraviolet Radiation, Hertzsprung-Russell Diagram, Spaceborne Astronomy, Tables (Data), Velocity Distribution

Scientific paper

Far-UV spectra of 47 O, B, and A stars obtained with the Copernicus satellite are examined for P Cygni profiles. For all 40 stars with displaced absorption lines, values are given for the velocities of the short-wavelength edge, the line center, and the emission peak (if present). Parts of the spectra of 42 stars are reproduced, evidence for mass motions in ground-based spectra is discussed, and the best available data are summarized on the wavelengths and oscillator strengths of most lines likely to show mass-loss effects in either visual or UV spectra. The main conclusions are that: (1) the far-UV transitions, especially resonance lines, show that mass flow is present over a much wider group of stars than revealed by visible data on subordinate lines; (2) most of the line shifts imply mass motion away from the stars; (3) mass flow occurs in all but one star brighter than a bolometric magnitude of -6.0; and (4) the observed terminal velocities generally exhibit no significant correlation with temperature, luminosity, gravity, rotational velocity, or line strength.

Affiliated with

Also associated with

No associations

Rating

Copernicus ultraviolet observations of mass-loss effects in O and B 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 Copernicus ultraviolet observations of mass-loss effects in O and B stars, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Copernicus ultraviolet observations of mass-loss effects in O and B stars will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1725220