J/ApJ/618/123 Hard X-ray-emitting AGNs (Silverman+, 2005)
Hard X-ray-emitting active galactic nuclei selected by the Chandra
Multiwavelength Project.
Silverman J.D., Green P.J., Barkhouse W.A., Kim D.-W., Aldcroft T.L.,
Cameron R.A., Wilkes B.J., Mossman A., Ghosh H., Tananbaum H., Smith M.G.,
Smith R.C., Smith P.S., Foltz C., Wik D., Jannuzi B.T.
<Astrophys. J., 618, 123-138 (2005)>
=2005ApJ...618..123S 2005ApJ...618..123S (SIMBAD/NED BibCode)
ADC_Keywords: Active gal. nuclei ; X-ray sources ; QSOs
Keywords: galaxies: active - quasars: general - surveys - X-rays: galaxies
Abstract:
We present X-ray and optical analysis of 188 active galactic nuclei
(AGN) identified from 497 hard X-ray
(f2.0-8.0keV>2.7x10-15ergs/cm2/s) sources in 20 Chandra fields
(1.5°2) forming part of the Chandra Multiwavelength Project
(ChaMP). These medium depth X-ray observations enable us to detect a
representative subset of those sources responsible for the bulk of the
28keV cosmic X-ray background. Brighter than our optical spectroscopic
limit, we achieve a reasonable degree of completeness (77% of X-ray
sources with counterparts r'<22.5 have been classified): broad
emission-line AGNs (62%), narrow emission-line galaxies (24%),
absorption line galaxies (7%), stars (5%), or clusters (2%).
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table4.dat 132 188 Hard X-ray emitting AGN
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See also:
J/ApJS/150/19 : ChaMP. I. First X-ray source catalog (Kim+, 2004)
Byte-by-byte Description of file: table4.dat
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Bytes Format Units Label Explanations
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1- 3 I3 --- Seq Source number
5 A1 --- f_Seq [e] Flag on Seq (1)
7- 11 A5 --- --- [CXOMP]
13- 28 A16 --- CXOMP The ChaMP name
30- 31 I2 h RAh Hour of Right Ascension (J2000)
33- 34 I2 min RAm Minute of Right Ascension (J2000)
36- 40 F5.2 s RAs Second of Right Ascension (J2000)
42 A1 --- DE- Sign of the Declination (J2000)
43- 44 I2 deg DEd Degree of Declination (J2000)
46- 47 I2 arcmin DEm Arcminute of Declination (J2000)
49- 52 F4.1 arcsec DEs Arcsecond of Declination (J2000)
54- 58 F5.1 ct Hard Counts in the 2-8keV band
60- 63 F4.1 ct e_Hard Uncertainty in Hard
65- 70 F6.2 [mW/m2] logfX Log of the galactic absorption-corrected
2-8keV flux in units of erg/cm2/s
72 A1 --- l_HR Limit flag on HR
73- 77 F5.2 --- HR Hardness ratio (2)
79- 83 F5.3 --- z Redshift
85- 89 F5.2 [10-7W] logLX Log of the rest frame 2-8keV luminosity
in units of erg/s
91- 95 F5.2 mag r'mag SDSS r' filter magnitude
97 A1 --- l_g'-i' Limit flag on g'-i'
98-102 F5.2 mag g'-i' SDSS (g'-r') color
104 A1 --- l_r'-i' Limit flag on r'-i'
105-109 F5.2 mag r'-i' SDSS (r'-i') color
111-115 A5 --- Class Classification (3)
117 A1 --- l_logNH Limit flag on logNH
118-122 F5.2 [cm-2] logNH ? Log of the hydrogen column density
124-127 F4.2 [cm-2] E_logNH ? Upper limit on logNH
129-132 F4.2 [cm-2] e_logNH ? Lower limit on logNH
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Note (1): A "e" indicates the source fell near the chip gap.
No spectral fitting is performed.
Note (2): The hardness ratio is HR=(H-S)/(H+S), where S is the count in the soft
band (0.3-2.5keV) and H the count in the hard band (2.5-8.0keV).
Note (3): Classification is defined as follows:
BLAGN = Broad Line AGN;
NELG = Narrow Emission Line Galaxy;
ALG = Absorption Line Galaxy.
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History:
From electronic version of the journal
(End) Greg Schwarz [AAS], Marianne Brouty [CDS] 26-Jul-2005