V/138 A catalogue of cross-matched radio/infrared/X-ray sources (Combi+, 2011)
A systematic cross-search for radio/infrared counterparts of XMM- Newton sources
Combi J.A., Albacete-Colombo J.F., Pellizza L., Lopez-Santiago J.,
Romero G.E., Marti J., Munoz-Arjonilla A.J., Sanchez-Ayaso E.,
Luque-Escamilla P.L., Sanchez-Sutil J.R.
<Astrophis. and Space Science, 331, 53 (2011)>
=2011Ap&SS.331...53C 2011Ap&SS.331...53C
ADC_Keywords: X-ray sources ; Radio sources ; Infrared sources ;
Cross identifications
Keywords: Catalogs, Methods: statistical ; X-rays: general ;
Radio continuum: general ; Infrared: general ; Surveys
Abstract:
We present a catalog of cross-correlated radio, infrared and X-ray
sources using a very restrictive selection criteria with an IDL-based
code developed by us. The significance of the observed coincidences
was evaluated through Monte Carlo simulations of synthetic sources
following a well-tested protocol. We found 3320 coincident radio/X-ray
sources with a high statistical significance characterized by the sum
of error-weighted coordinate differences. For 997 of them, 2MASS
counterparts were found. The percentage of chance coincidences is less
than 1%. X-ray hardness ratios of well-known populations of objects
were used to provide a crude representation of their X-ray spectrum
and to make a preliminary diagnosis of the possible nature of
unidentified X-ray sources. The results support the fact that the
X-ray sky is largely dominated by Active Galactic Nuclei at high
galactic latitudes (|b|≥10deg). At low galactic latitudes
(|b|≤10deg) most of unidentified X-ray sources (∼94%) lie at
|b|≥2deg. This result suggests that most of the unidentified sources
found toward the Milky Way plane are galactic objects. Well-known and
unidentified sources were classified in different tables with their
corresponding radio/infrared and X-ray properties. These tables are
intended as a useful tool for researchers interested in particular
identifications.
Description:
This is a complete version of the tables created for the manuscript,
that are not available at the journal website. These tables contain
radio, infrared and X-ray data for the 3320 sources in common in the
2XMM catalog and one of the following radio catalogs: NVSS, SUMSS,
and MGPS. A flag with the object types is included in this new version.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
tab_nvss.dat 222 2174 X-ray and radio parameters of XMM-Newton
source cross-matched with NVSS radio sources
tab_mgps.dat 222 106 X-ray and radio parameters of XMM-Newton
source cross-matched with MGPS2 radio sources
tab_sums.dat 222 344 X-ray and radio parameters of XMM-Newton
source cross-matched with SUMSS radio sources
tab_refs.dat 92 515 Reference records in tables tab_nvss.dat,
tab_mgps.dat and tab_sums.dat
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Byte-by-byte Description of file: tab_nvss.dat tab_mgps.dat tab_sums.dat
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Bytes Format Units Label Explanations
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1- 4 I4 --- Src Source identification number
7- 21 A15 --- 2XMM 2XMM designation
24- 25 I2 h RAh Right Ascension J2000 (hours)
27- 28 I2 min RAm Right Ascension J2000 (minutes)
30- 34 F5.2 s RAs Right Ascension J2000 (seconds)
37 A1 --- DE- Declination J2000 (sign)
38- 39 I2 deg DEd Declination J2000 (degrees)
41- 42 I2 arcmin DEm Declination J2000 (minutes)
44- 48 F5.2 arcsec DEs Declination J2000 (seconds)
51- 55 F5.2 arcsec err Position error
58- 62 F5.2 --- HR1 ? Hardness ratio between medium and soft
energy bands
64- 67 F4.2 --- e_HR1 ? Error in HR1
70- 74 F5.2 --- HR2 ? Hardness ratio between medium and hard
energy bands
76- 79 F4.2 --- e_HR2 ? Error in HR2
82- 84 F3.1 10+22/cm2 NH ? Column density determined from the fitting
of HR1 and HR2 to hot plasma models
87- 89 F3.1 keV kT ? Temperature of the hot plasma model
92- 94 F3.1 10+22/cm2 NH2 ? Column density determined from the fitting
of HR1 and HR2 to absorbed power-laws
97- 99 F3.1 --- Gamma ? Index of the power-law model Γ
102-108 F7.2 mW/m2 Fx X-ray flux in the 2XMM catalogue (erg/cm2/s)
110-115 F6.2 mW/m2 e_Fx Error in Fx
118-130 A13 --- Radio Radio designation (NVSS, MGPS or SUMSS)
133-139 F7.1 mJy FT Flux in the radio catalogue
141-146 F6.1 mJy e_FT Flux error in the radio catalogue
149-153 F5.2 --- Rxr R statistics of the 2XMM/radio correlation
156-168 A13 --- 2MASS 2MASS designation
171-175 F5.2 mag Ks ? 2MASS Ks magnitude
178-182 F5.2 mag H-K ? 2MASS H-Ks color
185-189 F5.2 mag J-H ? 2MASS J-H color
192-196 F5.2 --- Rxi ? R statistics of the 2XMM/2MASS correlation
199-203 F5.3 --- z ? Redshift for extragalactic sources
206-212 A7 --- Bib Bibliographic code
215-222 A8 --- Otype Identification flag in SIMBAD (1)
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Note (1): The identification flag (object type) is abbreviated as follows:
U = Unidentified source
U-rad = Unidentified source with previous radio detection
S = Star
P = Pulsar
SN-SNR = Supernova or Supernova remnant
LHMXB = Low/High mass X-ray binary
YSO = Young stellar object
OC = Young open cluster
M = Maser
GRS = Gamma ray source
SFR = Star forming region
PN = Planetary nebula
GC = Galactic center
SeyferI = Seyfert I galaxy
SeyferII = Seyfert II galaxy
Liner = Liner galaxy
Radio = Radiogalaxy
Double = Double galaxy
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Byte-by-byte Description of file: tab_refs.dat
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Bytes Format Units Label Explanations
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1- 3 I3 --- Bib Bibcode in tables tab_nvss.dat,
tab_mgps.dat and tab_sums.dat
6- 24 A19 --- BibCode ADS/Simbad/NED bibliographic code
27- 92 A66 --- Ref Bibliographic reference x
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History:
* 04-Nov-2012: on-line version
* 12-Mar-2013: Label NVSS corrected into Radio
(End) Javier Lopez-Santiago [UCM] 09-May-2012