SIMBAD references

2003ApJ...588.1009D - Astrophys. J., 588, 1009-1024 (2003/May-2)

Chandra X-ray observations of the young open cluster NGC 2516.

DAMIANI F., FLACCOMIO E., MICELA G., SCIORTINO S., HARNDEN F.R.Jr, MURRAY S.S., WOLK S.J. and JEFFRIES R.D.

Abstract (from CDS):

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 logfX=-14.56 (ergs/s/cm2), or logLX=28.69 (ergs/s) 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.

Abstract Copyright:

Journal keyword(s): Galaxy: Open Clusters and Associations: Individual: NGC Number: NGC 2516 - Stars: Coronae - X-Rays: Stars

VizieR on-line data: <Available at CDS (J/ApJ/588/1009): table4.dat table5.dat table6.dat>

Nomenclature: Table 4: [DFM2003] NNN (Nos 1-284). Table 4: Cl* NGC 2516 JTH NNNNN N=12 among (Nos 15496-15534) added.

Simbad objects: 294

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2019.11.15-07:33:58

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