Volume 366, Number 3, February II 2001
|Page(s)||817 - 826|
|Section||Galactic structure, stellar clusters, and populations|
|Published online||15 February 2001|
A search for peculiar objects in young open clusters*
I. New emission line and late spectral type stars in NGC 6871
Osservatorio Astronomico di Bologna, Via Ranzani 1, 40127 Bologna, Italy
2 Dipartimento de Astrofísica, Universidad de La Laguna, Avda. Astrofisico F. Sánchez sn, 30071 La Laguna, Spain
3 Istituto di Astrofisica Spaziale, CNR, Area della Ricerca di Roma Tor Vergata, V. Fosso del Cavaliere snc, 00133 Roma, Italy
Corresponding author: V. F. Polcaro, firstname.lastname@example.org
Accepted: 9 November 2000
We present the first results of a search in young open clusters for stars of very high initial mass, carried out by means of slitless spectroscopy. A deep () survey of the open cluster NGC 6871 reveals many new objects of late spectral type, including an S star, as well as three new emission line stars, which are classified as Be stars. The already known Be star HD 227733 is surrounded by a previously undetected reflection nebula. The star VES 145, classified as an emission line object, is actually a late-type star, without any emission feature. We argue that VES 145 is a young RSG of a very high mass () and a cluster member.
Key words: stars: early types / stars: emission-line, Be / stars: evolution / stars: individual (HD 227733, VES 145) / stars: late-type
© ESO, 2001
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