Astronomy and Astrophysics – Astronomy
Scientific paper
Jan 1975
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1975tvue.book.....b&link_type=abstract
Time variations of UV emission features of Be stars. Final report, 1 August 1972_- 31 January 1975., by Bahng, J. D. R.. Separa
Astronomy and Astrophysics
Astronomy
Emission Spectra, Line Spectra, Stellar Spectra, Ultraviolet Radiation, Astronomical Models, Balmer Series, H Alpha Line, Photoelectric Effect, Variable Stars, Wolf-Rayet Stars
Scientific paper
The UV spectra of three Be stars (gamma Cas, sigma Tau, eta Cen) were studied. Of the six Be stars observed in the first four lines of the Balmer series, three stars showed at least one of the Balmer lines to be variable in the equivalent width amounting to a few percent with time scales of 3 to 30 minutes. Photoelectric spectrum scans of five southern Wolf-Rayet stars showed night-to-night variations. A simple model is proposed to account for the behavior of these emission lines. Scans of gamma square Vel showed rapid variations of emission strengths of He II 4686 and C III - IV 4650. These variations have time scales of 1 minute and longer. Night-to-night variations were also found. Scans of four Be stars in H alpha showed a definite variation of 3 to 4 percent, with time scales of 1 minute and longer in sigma Tau. In 48 Per and kappa Dra the variations are not as well established. No variation of any significance was found for nu Gem.
No associations
LandOfFree
Time variations of UV emission features of Be 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 Time variations of UV emission features of Be stars, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Time variations of UV emission features of Be stars will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1752019