Astronomy and Astrophysics – Astronomy
Scientific paper
Jan 1986
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986pasp...98...35p&link_type=abstract
(Workshop on the Connection between Nonradial Pulsations and Stellar Winds in Massive Stars, Boulder, CO, Apr. 17-19, 1985) Astr
Astronomy and Astrophysics
Astronomy
46
B Stars, Line Spectra, Spectral Energy Distribution, Stellar Mass Ejection, Stellar Oscillations, Absorption Spectra, Spectrum Analysis
Scientific paper
In an observation of about 1500 spectra of a sample of 25 rapidly rotating Bn and Be stars, on 20 different observing runs, it was found that all but two of the program stars show obvious line-profile variations due to nonradial pulsation. The amplitude of the pulsations in the B(e) star Lambda Eridani is correlated with the occurrence of Be outbursts. The same correlation had been observed by Vogt and Penrod (1983) for the O(e) star, Zeta Ophiuchi. Attention is also given to transient blue-shifted absorption components sometimes seen in a number of stars, the suggestion that pulsation is a major contributor to the Be phenomenon, and the He I lambda 6678 line profiles of Lambda Eri on two occasions in October 1983.
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