Free access
Issue
Astron. Astrophys. Suppl. Ser.
Volume 118, Number 3, September 1996
Page(s) 495 - 502
DOI http://dx.doi.org/10.1051/aas:1996215
B[e] stars. II. MWC 349 A DOI: 10.1051/aas:1996215

Astronomy and Astrophysics Supplement Series, Vol. 118, September 1996, 495-502

B[e] stars. II. MWC 349 A gif

Y. Andrillat , M. Jaschek and C. Jaschek

Send offprint requests to: C. Jaschek

Laboratoire d'Astronomie Université de Montpellier 2, URA 1280 and 1981, CNRS, Place Eugène Bataillon, 34095 Montpellier Cedex 5, France
Observatoire de Strasbourg, URA 1280, CNRS, 11, rue de l'Université, 67000 Strasbourg, France

Received November 17, 1995; accepted January, 1996

Abstract:

We analyse spectroscopic CCD material obtained at the Haute Provence Observatory. We provide line identifications and equivalent width measurements in the wavelength region 3700-8790 Å. Over 300 emission features are identified and a comparison of our results with those of other authors is provided, as well as a table of all elements which have been identified in the spectrum of the object. The pattern of elements present is analogous to that of B-type stars, but some exceptions are noted, such as the absence of C, Al and Mn. We review the present knowledge of the spectrum variability of MWC 349 A. The observations indicate that the equivalent widths of the lines of many elements vary by factors of up to two. We also provide a list of diffuse interstellar features observed. The latter lead to an average (B-V) excess of about two magnitudes, which is less than what is expected for an object having an interstellar extinction of 10-11 magnitudes.

Key words: stars: emission line, B[e] --- stars variables: others --- stars: individual: MWC 349 A


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