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Astron. Astrophys. 337, 512-516 (1998)

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Research Note

Helium peculiar stars in the red spectral region *

Y. Andrillat 1 and C. Jaschek 2

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

Received 23 January 1998 / Accepted 26 May 1998

Abstract

Based upon 33 A/mm dispersion spectroscopic material we examine if equivalent widths of H and He lines can be used for the detection of new helium-peculiar stars. The answer is affirmative and we present some new candidates discovered this way.

We have also investigated if the use of different helium lines than those of the 3D series (4026, 4471) modifies the assignments of helium peculiar stars. This is not the case, since the use of [FORMULA] 6678 (1D) and [FORMULA] 7065 (3S) gives the same results.

Key words: stars: chemically peculiar – stars: early-type

* Based on observations obtained at the Haute Provence Observatory (CNRS)

Send offprint requests to: Y. Andrillat, 27 ter, rue Adam de Craponne, F-34000 Montpellier, France

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© European Southern Observatory (ESO) 1998

Online publication: August 17, 1998
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