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Astron. Astrophys. 362, 580-584 (2000)

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Research Note

The central part of the young open cluster NGC 6383 *

M.E. van den Ancker 1,2, P.S. Thé 1 and D. de Winter 1,3

1 University of Amsterdam, Astronomical Institute "Anton Pannekoek", Kruislaan 403, 1098 SJ Amsterdam, The Netherlands
2 Harvard-Smithsonian Center for Astrophysics, 60 Garden Street, MS 42, Cambridge MA 02138, USA
3 TNO-TPD, P.O. Box 155, 2600 AD Delft, The Netherlands

Received 19 May 2000 / Accepted 27 June 2000

Abstract

The spectral and extinction properties of 14 pre-main sequence candidates in the central part of the very young open cluster NGC 6383 were investigated. None of these stars shows evidence for anomalous circumstellar extinction. However, six out of 14 programme stars do show an infrared excess, indicative of the presence of circumstellar dust, heated up by the central star. One of these stars (number 4), also shows H[FORMULA] in emission and shows some indications for the presence of circumstellar gas in its spectrum, and might therefore be a newly identified Herbig Ae star.

Key words: stars: circumstellar matter – stars: pre-main sequence – ISM: dust, extinction – ISM: H ii regions – Galaxy: open clusters and associations: individual: NGC 6383

* Based on observations collected at the European Southern Observatory, La Silla, Chile.

Send offprint requests to: M.E. van den Ancker (mario@astro.uva.nl)

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© European Southern Observatory (ESO) 2000

Online publication: October 24, 2000
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