| Issue |
A&A
Volume 366, Number 3, February II 2001
|
|
|---|---|---|
| Page(s) | 817 - 826 | |
| Section | Galactic structure, stellar clusters, and populations | |
| DOI | https://doi.org/10.1051/0004-6361:20000237 | |
| 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
1
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, polcaro@saturn.ias.rm.cnr.it
Received:
17
November
1999
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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