NASA/IPAC EXTRAGALACTIC DATABASE
Date and Time of the Query: 2019-04-25 T01:20:27 PDT
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For refcode 2003ApJ...588.1009D:
Retrieve 284 NED objects in this reference.
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Copyright by American Astronomical Society. Reproduced by permission
2003ApJ...588.1009D Chandra X-Ray Observations of the Young Open Cluster NGC 2516 F. Damiani, E. Flaccomio, G. Micela, S. Sciortino, F. R. Harnden, Jr., S. S. Murray, S. J. Wolk, and R. D. Jeffries Abstract. We present a comprehensive study of the Chandra X-ray observations of the young open cluster NGC 2516. We have analyzed eight individual Chandra observations. We have combined the data to achieve the greatest sensitivity, reaching down to log f_X_=-14.56 (ergs s^-1^ cm ^-2^), or log L_X_=28.69 (ergs s^-1^) at the distance of NGC 2516. Out of 284 X-ray sources detected, 155 are identified with photometric cluster members, with very little ambiguity. We have studied the X-ray luminosity functions for the various spectral types, correcting for nonmember contamination those for later type stars. We find strong X-ray emission from a couple of B stars that cannot be due to companions. Among A stars, chemically peculiar stars show a detection fraction much larger than normal A stars. The luminosity functions decrease monotonically from F to M stars, and those for K stars are significantly lower than similar stars in the Pleiades, a cluster only slightly younger than NGC 2516. We discuss possible causes of this discrepancy, including differences in age and stellar rotation. Key words: Galaxy: Open Clusters and Associations: Individual: NGC 2516, Stars: Coronae, X-Rays: Stars
Retrieve 284 NED objects in this reference.
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