J/ApJ/588/1009 Chandra X-ray observations of NGC 2516 (Damiani+, 2003)
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., Jeffries R.D.
<Astrophys. J. 588, 1009 (2003)>
=2003ApJ...588.1009D 2003ApJ...588.1009D
ADC_Keywords: Clusters, open ; X-ray sources ; Photometry, UBVRI
Keywords: open clusters and associations: individual (NGC 2516) -
stars: coronae - X-rays: stars
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 fX=-14.56(erg/s/cm2),
or logLX=28.69(erg/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.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table4.dat 85 288 NGC 2516 X-ray source optical identifications
table5.dat 16 114 X-ray luminosities for detected NGC 2516 members
table6.dat 11 570 Upper limits to X-ray luminosities for
undetected NGC 2516 members
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See also:
J/AJ/123/290 : UBVI CCD photometry of NGC 2516 (Sung+, 2002)
J/A+A/312/818 : NGC 2516 X-ray sources (Dachs+, 1996)
Byte-by-byte Description of file: table4.dat
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Bytes Format Units Label Explanations
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1- 3 I3 --- [DFM2003] X-ray source number
5 I1 h RAh Hour of mean Right Ascension (J2000)
7- 8 I2 min RAm Minute of mean Right Ascension (J2000)
10- 14 F5.2 s RAs Second of mean Right Ascension (J2000)
16 A1 --- DE- Sign of the mean Declination (J2000)
17- 18 I2 deg DEd Degree of mean Declination (J2000)
20- 21 I2 arcmin DEm Arcminute of mean Declination (J2000)
23- 26 F4.1 arcsec DEs Arcsecond of mean Declination (J2000)
28- 31 F4.2 arcsec PosErr Positional error
33- 37 F5.2 10-6ct/s/cm2 Flux Mean source X-Ray flux
39- 42 F4.2 10-6ct/s/cm2 e_Flux Error in Flux
44 I1 --- o_[DFM2003] Number of detections
46- 50 I5 --- JTH ? Jeffries et al. (2001A&A...375..863J 2001A&A...375..863J)
number (G1)
52- 56 F5.2 arcsec Offset ? Optical-X-ray offset
58- 63 F6.3 mag Vmag ? The V band magnitude
65- 70 F6.3 mag B-V ? The (B-V) color
72- 76 F5.3 mag V-I ? The (V-I) color
78- 80 A3 --- Mem Cluster member flag (yes/no)
82- 84 A3 --- Bin Binary flag (yes/no)
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Byte-by-byte Description of file: table5.dat
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Bytes Format Units Label Explanations
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1- 3 I3 --- [DFM2003] X-ray number
5- 9 I5 --- JTH Jeffries et al. (2001A&A...375..863J 2001A&A...375..863J)
number (G1)
11- 15 F5.2 [10-7W] logLX Log of X-ray luminosity in units of erg/s
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Byte-by-byte Description of file: table6.dat
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Bytes Format Units Label Explanations
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1- 5 I5 --- JTH Jeffries et al. (2001A&A...375..863J 2001A&A...375..863J) number (G1)
7- 11 F5.2 [10-7W] logLX Log of the upper limit X-ray luminosity
in units of erg/s
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Global notes:
Note (G1): Cl* NGC 2516 JTH NNNNN in Simbad
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History:
From electronic version of the journal
(End) Greg Schwarz [AAS], Patricia Bauer [CDS] 26-Sep-2003