Pulsating pre-Main sequence stars in young open clusters

Author(s)

Konstanze Zwintz, Marcella Marconi, Thomas Kallinger, Werner W. Weiss

Abstract

New pulsating pre-main sequence (PMS) stars have been discovered in the

young open clusters IC 4996 and NGC 6383 using CCD time series

photometry in Johnson B and V filters. As the cluster ages are both

smaller than 10 million years, all members later than spectral type A0

are still contracting towards the ZAMS, hence providing ideal candidates

for searches of pulsation. A dozen stars in NGC 6383 and 35 stars in IC

4996 lie within the boundaries of the classical instability region in

the Hertzsprung-Russell (HR) diagram, but pulsation was detected for

only two of them in each cluster.

Organisation(s)

Department of Astrophysics

External organisation(s)

INAF Astronomical Observatory of Capodimonte

Journal

Proceedings of the International Astronomical Union

Volume

224

Pages

353-358

ISSN

1743-9213

DOI

https://doi.org/10.1017/S1743921304004752

Publication date

2004

Peer reviewed

Yes

Austrian Fields of Science 2012

103004 Astrophysics

Keywords

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