X-ray Sources of the Young Open Cluster M35

Type Conference Paper
Names Aisha Mahmoud, N. Gosnell, R. Mathieu, D. Pooley, J. Kalirai
Proceedings Title Bulletin of the American Astronomical Society
Conference Name American Astronomical Society, AAS Meeting #215, #478.01
Volume 42
Pages 565
Date January 1, 2010
URL http://adsabs.harvard.edu/abs/2010AAS...21547801M
Library Catalog NASA ADS
Abstract Previous studies of the X-ray population of globular clusters revealed a relation between the number of X-ray sources and the encounter frequency of the cluster, pointing to a dynamical history for the sources. In order to extend this relationship to clusters of lower masses, we observed 8 rich open clusters using the XMM-Newton Observatory. We present preliminary results of the first X-ray study of the young rich open cluster M35. In order to classify the X-ray sources, we matched the XMM-Newton data with optical photometry and spectroscopy from the WIYN Open Cluster Study (WOCS). We found 51 X-ray sources in the field of M35 to a luminosity limit of 1030 ergs/s for cluster members. From the 21 optical counterparts, 3 sources are known spectroscopic binary systems, 9 are single stars, and 11 are still unclassified. 15 of the 21 sources are rapid rotators, suggesting a dynamo origin for the X-ray emission rather than dynamics.
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