Astronomy and Astrophysics – Astronomy
Scientific paper
Oct 1985
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1985azh....62..918p&link_type=abstract
(Astronomicheskii Zhurnal, vol. 62, Sept.-Oct. 1985, p. 918-929) Soviet Astronomy (ISSN 0038-5301), vol. 29, Sept.-Oct. 1985, p.
Astronomy and Astrophysics
Astronomy
12
A Stars, B Stars, Stellar Envelopes, Stellar Spectra, Emission Spectra, H Alpha Line, H Beta Line, Infrared Spectra, Spectral Line Width
Scientific paper
The results of a spectral and photometric investigation of nine Herbig Ae/Be stars in the visible region of the spectrum in the period from 1978 to 1982 are presented. Certain physical and kinematic parameters of the circumstellar envelopes of the investigated objects are determined on the basis of the observational material obtained and Sobolev's (1947) probabilistic method for moving envelopes. It is shown that the observed spectral characteristics of the envelopes of Herbig Ae/Be stars and their variability can be explained by using models of extended isothermal envelopes with varying structural-kinematic parameters. The existence of a correlation between the amount of dust IR excess and the presence of signs of H2O absorption in the spectra of the investigated objects is noted.
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