Astron. Astrophys. 359, 299-305 (2000)

Spectroscopic behaviour of the Herbig Be star HD 200775 around its maximum activity in 1997

M.A. Pogodin ¹, A.S. Miroshnichenko ^1,2, K.S. Bjorkman ², N.D. Morrison ² and C.L. Mulliss <sup>2

1</sup> Pulkovo Observatory, Saint-Petersburg, 196140, Russia
² Ritter Observatory, Department of Physics and Astronomy, The University of Toledo, Toledo, OH 43606-3390, USA

Received 4 February 2000 / Accepted 26 April 2000

Abstract

We present the results of high-resolution spectroscopic observations of the pre-main-sequence (PMS) Herbig Be star HD 200775 obtained between August 1994 and December 1999. The behaviour of H, H and He I before, during, and after the last high-activity event of the object in 1997 is studied. A complex picture of the circumstellar evolution in this period is discussed. It is concluded that the results of observations can be interpreted in the framework of a model with a variable stellar wind originating from the star. We emphasize the importance of coordinated high-resolution spectroscopic observations for further understanding the star's behaviour.

Key words: techniques: spectroscopic stars: circumstellar matter stars: individual: HD 200775 stars: pre-main sequence

Send offprint requests to: M.A. Pogodin (pogodin@pulkovo.spb.su)

SIMBAD Objects

Contents

• 1. Introduction
• 2. Observations
• 3. Results
• 4. Discussion
• Acknowledgements
• References

© European Southern Observatory (ESO) 2000

Online publication: June 30, 2000
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