Looking for binaries in the oldest open clusters

Details Looking for binaries in the oldest open clusters Looking for binaries in the oldest open clusters

Sep 2003

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003cxo..prop.1397v&link_type=abstract

Chandra Proposal ID #05200722

Computer Science

Chandra Proposal Id #05200722

Scientific paper

We propose to extend our study of close interacting binaries in old open clusters by observing three of the oldest open clusters. Based on our previous observations of old open clusters, we expect to detect a variety of binaries (e.g. active binaries and cataclysmic variables) which we can use to study subsequent stages of binary evolution. Also, these binaries provide information on various types of stellar interactions (tidal interaction, mass transfer, close encounters) in an open cluster. We want to compare the properties of X-ray sources in old open clusters with those in denser globular clusters. Our primary target, NGC6791, is one of the richest open clusters with an age (8-9 Gyr) close to that of globular clusters; no open cluster of this age has been studied in X-rays before.

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