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RESEARCH PRODUCT
X-ray sources in NGC 752
G. GiardinoI. PillitteriF. FavataG. Micelasubject
Open star clustersPhotometryobservational astronomyAstrophysics and AstronomyX ray sourcesStellar AstronomyPhysicsX-ray sourcesNatural SciencescosmologyInfrared photometrydescription
While observational evidence shows that most of the decline in a star's X-ray activity occurs between the age of the Hyades (~8x10^8yr) and that of the Sun, very little is known about the evolution of stellar activity between these ages. To gain information on the typical level of coronal activity at a star's intermediate age, we studied the X-ray emission from stars in the 1.9Gyr old open cluster NGC 752. We analysed a ~140ks Chandraobservation of NGC 752 and a ~50ks XMM-Newtonobservation of the same cluster. We detected 262 X-ray sources in the Chandra data and 145 sources in the XMM-Newton observation. Around 90% of the catalogued cluster members within Chandra's field-of-view are detected in the X-ray. The X-ray luminosity of all observed cluster members (28 stars) and of 11 cluster member candidates was derived. Cone search capability for table J/A+A/490/113/table7 (*X-ray sources detected with Pwxdetect in the XMM observation of the open cluster NGC 752.) Cone search capability for table J/A+A/490/113/table6 (*X-ray sources detected with Pwdetect in the Chandra observation of the open cluster NGC 752 (energy band {Delta}E=0.5-2.0keV))
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2008-01-01 |