J/ApJS/222/12 Luminous X-ray candidates within D25 of galaxies (Gong+, 2016)
An extreme luminous X-ray source catalog based on Chandra ACIS observations.
Gong H., Liu J., Maccarone T.
<Astrophys. J. Suppl. Ser., 222, 12 (2016)>
=2016ApJS..222...12G 2016ApJS..222...12G (SIMBAD/NED BibCode)
ADC_Keywords: X-ray sources ; Galaxies, nearby ; Radio sources ; Surveys
Keywords: catalogs; galaxies: general; X-rays: binaries; X-rays: galaxies
Abstract:
Using Chandra archive data we conduct a thorough survey of luminous
X-ray sources. We directly analyze about 9400 ACIS Observations and
cross-correlate the X-ray sources with 77000 galaxies within 250Mpc.
The final catalog includes 119 unique luminous X-ray source candidates
with LX>3x1040erg/s from 93 galaxies or 41 HLX candidates with
LX>1x1041erg/s from 35 galaxies. We derive a moderate
contamination rate due to foreground or background sources. We also
cross-correlate the catalog with FIRST, perform variability and
periodicity tests, and analyze one HLX candidate in particular. Our
catalog could be a starting point to perform follow-up observations.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table1.dat 93 119 Extreme luminous X-ray source candidates in D25s
table2.dat 92 9 Cross-correlation between our catalog and FIRST
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See also:
B/chandra : The Chandra Archive Log (CXC, 1999-2014)
VIII/92 : The FIRST Survey Catalog, Version 2014Dec17 (Helfand+ 2015)
IX/45 : The Chandra Source Catalog, Release 1.1 (Evans+ 2012)
VII/237 : HYPERLEDA. I. Catalog of galaxies (Paturel+, 2003)
J/MNRAS/446/470 : ULX candidates in luminous IR galaxies (Luangtip+, 2015)
J/AJ/143/144 : ULX candidates in nearby Arp galaxies (Smith+, 2012)
J/ApJ/741/49 : ULX candidates in nearby galaxies (Swartz+, 2011)
J/MNRAS/416/1844 : 2XMM ultraluminous X-ray source candidates (Walton+, 2011)
J/ApJS/192/10 : Chandra ACIS survey in 383 nearby galaxies. I. (Liu, 2011)
J/A+A/493/339 : XMM-Newton serendipitous Survey. V. (Watson+, 2009)
J/ApJ/687/471 : Observational comparison between ULXs and XRBs (Berghea+, 2008)
J/ApJ/664/458 : Spectral fit of ULX sources (Devi+, 2007)
J/A+A/452/739 : ULX sources and FIRST radio sources (Sanchez-Sutil+, 2006)
J/ApJ/649/730 : ULX population in nearby galaxies from XMM (Winter+, 2006)
http://cxc.cfa.harvard.edu/ : Chandra X-ray Observatory (CXC) home page
http://sundog.stsci.edu/ : VLA FIRST survey home page
Byte-by-byte Description of file: table1.dat
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Bytes Format Units Label Explanations
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1- 5 I5 --- ObsID [497/15049] Chandra observation ID
7- 11 F5.1 ks Exp [1.5/150] Exposure time
13- 21 F9.5 deg RAdeg [2.9/359.3] Right ascension (J2000)
23- 31 F9.5 deg DEdeg [-78.5/71.8] Declination (J2000)
33- 39 F7.1 --- Ncts [10.2/10080.6] Net counts with wavdetect
41- 46 I6 --- PGC [2248/702439] PGC sequence number (Cat. VII/237)
48- 53 F6.2 Mpc Dist [38.5/248.8] Distance
55- 62 E8.3 mW/m2 Flux 0.3-8keV absorbed flux in erg/cm2/s (1)
64- 71 F8.2 10+32W LX [30.6/14164] 0.3-8keV luminosity in 1039erg/s (1)
73- 78 E6.2 --- K-S [0/0.006]? Kolmogorov-Smirnov (K-S) test (2)
80- 91 A12 --- Comm Comments
93 A1 --- r_Comm Comment source (3)
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Note (1): 0.3-8keV absorbed flux derived by model flux. Luminosities are given
using their left column fluxes directly since the galactic absorption
is low.
Note (2): For the 119 X-ray sources in our catalog, we apply a
Kolmogorov-Smirnov (K-S) test to test the null hypothesis that the
photon accumulation is uniform. A variable source is defined with
PK-S<0.01.
Note (3): Source code as follows:
b = SIMBAD
1 = Farrell et al. (2009Natur.460...73F 2009Natur.460...73F)
2 = Sutton et al. (2012MNRAS.423.1154S 2012MNRAS.423.1154S), Gutierrez & Moon (2014ApJ...797L...7G 2014ApJ...797L...7G)
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Byte-by-byte Description of file: table2.dat
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Bytes Format Units Label Explanations
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1- 5 I5 --- ObsID [904/13895] Chandra observation ID
7- 15 F9.5 deg RAdeg [10.4/240.6] Right ascension (J2000)
17- 24 F8.5 deg DEdeg [-9.4/63.3] Declination (J2000)
26- 33 E8.3 mW/m2 Flux 0.3-8keV absorbed flux in erg/cm2/s
35- 40 I6 --- FIRST [7156/933679] FIRST sequence number
(recno in Cat. VIII/92)
42- 50 F9.5 deg RAFdeg [10.4/240.6] FIRST right ascension (J2000)
52- 59 F8.5 deg DEFdeg [-9.4/63.3] FIRST declination (J2000)
61- 67 F7.2 mJy Fint [1/2947.1] Integrated flux density at 1.4GHz
69- 72 F4.2 arcsec Sep [0.2/2.91] Separation between source and FIRST
74- 79 F6.2 Hz-1 logLR/LX [-14.4/-9.2] Radio to X-ray luminosity
81- 92 A12 --- OType Object type in SIMBAD
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History:
From electronic version of the journal
(End) Emmanuelle Perret [CDS] 08-Feb-2016