/ftp/cats/J_A+A/312/818



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J/A+A/312/818       NGC 2516 X-ray sources (Dachs+, 1996)
The following files can be converted to FITS (extension .fit .fit.Z .fgz)
	table2 table3 table6
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Query from: http://vizier.cds.unistra.fr/cgi-bin/VizieR?-source=J/A+A/312/818
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drwxr-xr-x 12 cats archive 216 Jan 29 2012 [Up] drwxr-xr-x 2 cats archive 314 Jan 12 2023 [TAR file] -rw-r--r-- 1 cats archive 457 Dec 19 2022 .message -r--r--r-- 1 cats archive 9072 Oct 26 2012 ReadMe -rw-r--r-- 1 cats archive 614 Sep 19 2007 +footg5.gif -rw-r--r-- 1 cats archive 2311 Mar 5 2008 +footg8.gif -r--r--r-- 1 cats archive 4480 Apr 15 1996 table2 -r--r--r-- 1 cats archive 8887 Apr 15 1996 table2.tex -r--r--r-- 1 cats archive 4137 Apr 16 1996 table3 -r--r--r-- 1 cats archive 7235 Apr 15 1996 table3.tex -r--r--r-- 1 cats archive 4468 Apr 15 1996 table6 -r--r--r-- 1 cats archive 7658 Apr 15 1996 table6.tex
Beginning of ReadMe : J/A+A/312/818 NGC 2516 X-ray sources (Dachs+, 1996) ================================================================================ ROSAT survey of stellar X-ray sources in the young open cluster NGC 2516 Dachs J., Hummel W. <Astron. Astrophys. 312, 818 (1996)> =1996A&A...312..818D (SIMBAD/NED BibCode) ================================================================================ ADC_Keywords: X-ray sources ; Clusters, open Mission_Name: ROSAT Keywords: X-rays: stars - stars: chemically peculiar - stars: emission-line - open clusters: NGC 2516 - stars: coronae Description: The ROSAT PSPC detector was used to obtain a deep pointing with its center on the young open cluster NGC 2516 and total integration time of 9284 sec. Altogether 64 X-ray sources were detected showing strong concentration towards the optical cluster centre. This suggests that most of the sources are actually associated with NGC 2516. 42 of these sources could be identified with optical stars in the field of the cluster; after correction for a mean offset between optical and nominal ROSAT positions of about 13", optical star and X-ray source positions are found to agree, on the average, within about 9", while maximum observed positional differences amount to 27". X-ray sources identified with optical cluster stars include HR 3147 (=HD 66194; B2.5IVe), the visually brightest B star in the cluster, three close visual late B-type binaries (h 4027 A,B, h 4031 A,B, and I 1104 A,B) with projected separations ranging between about 4x10^16^cm and 6x10^16^cm, as well as several (six) chemically peculiar Bp/Ap(Si) and Ap(SrCrEu) stars.