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Near Infrared Spectra of 103 Bright Be Stars

Published online by Cambridge University Press:  23 September 2016

Y. Andrillat
Y. Andrillat*
Affiliation:
Laboratoire d'Astronomie, Université des Sciences et Techniques du Languedoc, F-34060 Montpellier Cedex, France

Extract

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We have observed 103 bright Be stars in the near infrared up to 10500 A with a dispersion of 230 and 50 A mm-1. The observations were performed with a Reticon (1024 diodes) attached to the ROUCAS spectrograph at the 193 cm telescope of the Haute Provence Observatory.

In this spectral range, the Be stars are characterized by the lines of HI (Paschen series), 0I(7772-74-75, 8446 A), CaII(8542, 8662, 8498 A), FeII(7712, 9997 A) and NI(8686-83-80, 8719-12-03, 8629 A).

On our spectra, the CaII triplet is always blended with P13, P15, P16, and only the enhancement of these lines permits to conclude to the CaII presence. The 0I 8446 A is perturbed by the Paschen lines P17 and P18 (low dispersion spectra) and P18 (high dispersion spectra). The NI 8686-83-80 A lines also perturb the P13 profile.

Type
III. The Circumstellar Gas
Information
International Astronomical Union Colloquium , Volume 92: Physics of Be Stars , August 1987 , pp. 237 - 238
Copyright
Copyright © Cambridge University Press 1987

References

Reference List

Andrillat, Y. & Houziaux, L. (1967). Spectres IR de quelques étoiles des premiers types entre 6500 et 8800 A. J. Obs., 50, 107.Google Scholar
Kitchin, C.R. & Meadows, A.J. (1970). The behaviour of the IR lines of OI lines. Astrophys. Space Sci., 8, 463.CrossRefGoogle Scholar
Polidan, R.S. & Peters, G.J. (1976). Spectroscopic obs. of Be stars in the near IR. IAU Syrap. n° 70. Ed. Slettebak, A., 59.Google Scholar