Astron. Astrophys. Suppl. Ser.
Volume 128, Number 3, March II 1998
|Page(s)||475 - 483|
|Published online||15 March 1998|
B[e] stars *
V. HD 50138 = MWC 158
Observatoire de Strasbourg, URA 1280, CNRS 11, rue de l'Université, 67000 Strasbourg, France
2 Laboratoire d'Astronomie Université de Montpellier 2, URA 1280 CNRS, Place Eugène Bataillon, 34095 Montpellier Cedex 5, France
Send offprint request to: Y. Andrillat
Accepted: 1 August 1997
On the basis of spectroscopic CCD material obtained at the Haute Provence Observatory, we provide line identifications and equivalent width measurements in the wavelength region 3738-10232 A of the spectrum of HD 50138 Over two hundred features are identified and a comparison of our results with those of other authors is provided. We also discuss the variability of the lines using equivalent widths and descriptions of the line spectrum. We attribute as a best compromise a spectral type of B 5 III. We conclude that the gaseous shell surrounding the star has a temperature of the order of 10 000 K and that its distance to the star is of the order of two stellar radii. We discuss the relation of this star to others previously analyzed and warn against hasty generalizations.
Key words: stars: emission line, B[e] / stars peculiar stars: HD 50138
© European Southern Observatory (ESO), 1998