Pulsating pre-Main sequence stars in young open clusters

Autor(en)

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

Abstrakt

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(en)

Institut für Astrophysik

Externe Organisation(en)

INAF-Osservatorio Astronomico di Capodimonte

Journal

Proceedings of the International Astronomical Union

Band

224

Seiten

353-358

ISSN

1743-9213

DOI

https://doi.org/10.1017/S1743921304004752

Publikationsdatum

2004

Peer-reviewed

Ja

ÖFOS 2012

103004 Astrophysik

Schlagwörter

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