HYDROGEN LINES IN B-e STARS ENVELOPES

Автор(и)

  • S. N. Udovichenko Astronomical Observatory, Odessa State University, Ukraine
  • E. I. Konchagina Astronomical Observatory, Odessa State University, Ukraine

DOI:

https://doi.org/10.18524/1810-4215.1997.10.105449

Ключові слова:

Be-stars, envelope, emissions lines, profiles

Анотація

The investigation of Balmer Hα and Hb line profiles for 28 Be and Be-shell stars have been carried out. The emission profiles of stars were obtained by subtracting from “A Be star atlas” photospheric line profiles which were computed from Kurucz models and corrected from gravity and rotation. The relationships between emission-line widths, equivalent widths and rotational velocity for 28 B-e stars confirm the origin of envelope these stars from rotational mass loss, consistent with a rotating,  equatorial disk. The smaller emission disks shown the weak Hα emission lines. The biggest - the strong one.

Посилання

Doazan V.: 1982, in: B stars with and without emission tines, Editors: Underhill A., Doazan V., Paris, Washington.

Doazan V., Sedmak G., Barylak M., Rusconi L.: 1991, A Be star atlas of far UV and optical high-resolution spectra European Space Agency

Gray D.F.: 1980, The observation and analysis of stellar photospheres, Mir, Moscow.

Kurucz R.L.: 1979, Ap. J. Suppl. Ser., 40, 1

Slettebak A., Collins G.W., Truax R.: 1992, Ast. J. Suppl. Ser., 81, 335

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Опубліковано

2017-06-27

Номер

Том 10 (1997)

Розділ

Статті

Ліцензія

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Відповідно Закону України про авторське право і суміжні права N 3792-XII від 23 грудня 1993 року