Pulsating pre-Main sequence stars in young open clusters

Details Pulsating pre-Main sequence stars in young open clusters Pulsating pre-Main sequence stars in young open clusters

Dec 2004

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004iaus..224..353z&link_type=abstract

The A-Star Puzzle, held in Poprad, Slovakia, July 8-13, 2004. Edited by J. Zverko, J. Ziznovsky, S.J. Adelman, and W.W. Weiss,

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11

Techniques: Photometric, Stars: Pre-Main-Sequence, Stars: Variables: Other, Galaxy: Open Clusters And Associations: Individual (Ngc 6383, Ic 4996).

Scientific paper

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.

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