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Astron. Astrophys. 347, 137-150 (1999)


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Observations of recently recognized candidate Herbig Ae/Be stars *

A.S. Miroshnichenko 1, R.O. Gray 2, S.L.A. Vieira 3, K.S. Kuratov 4 and Yu.K. Bergner 1

1 Pulkovo Observatory, Saint-Petersburg, 196140, Russia (anat@pulkovo.spb.su)
2 Department of Physics and Astronomy, Appalachian State University, Boone, NC 28608, USA
3 Departamento de Física - ICEx - UFMG, Caixa Postal 702, 30.123-970, Belo Horizonte, Brazil
4 Fesenkov Astrophysical Institute, 480068, Almaty, Kazakhstan

Received 4 January 1999 / Accepted 13 April 1999

Abstract

The results of multicolor photometric and low-resolution spectroscopic observations of 9 Herbig Ae/Be candidate stars are reported. This sample includes two newly recognized objects, MQ Cas and BD[FORMULA], which were found by means of cross-correlation of the IRAS Point Source Catalogue and the catalogue of the galactic early-type emission-line stars (Wackerling 1970). Near-IR excesses were detected in two stars (AS 116 and BD[FORMULA]) for the first time. Algol-type variability, which is not common in Herbig Ae/Be stars, was detected in MQ Cas and V1012 Ori. Spectral types are determined for MQ Cas, GSC 1811-0767, HDE 244604, BD[FORMULA], V1012 Ori, AS116, AS117, and HDE 290380 from low-resolution spectroscopy. Analysis of our and previously published data suggests that 8 of the 9 objects are pre-main-sequence stars, while the last one, Hen 938, is more likely a B[e] supergiant.

Key words: techniques: photometric – techniques: spectroscopic – stars: emission-line, Be – stars: planetary systems – stars: pre-main sequence

* Based on observations collected at the Astrophysical National Laboratory (LNA - Brazil), the South-African Astronomical Observatory, the Dark Sky Observatory (USA), and the Tien-Shan Observatory (Kazakhstan)

Send offprint requests to: A.S. Miroshnichenko

© European Southern Observatory (ESO) 1999

Online publication: June 18, 1999

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