J/A+A/477/125 Microquasar candidates (Combi+, 2008)
A new search strategy for microquasar candidates using NVSS/2MASS and
XMM-Newton data.
Combi J.A., Albacete-Colombo J.F., Marti J.
<Astron. Astrophys., 477, 125-132 (2008)>
=2008A&A...477..125C 2008A&A...477..125C
ADC_Keywords: X-ray sources ; Radio sources ; Infrared sources ; QSOs
Keywords: radio continuum: general - X-rays: binaries - infrared: stars -
stars: early-type - catalogs
Abstract:
Microquasars are ideal natural laboratories for understanding
accretion/ejection processes, studying the physics of relativistic
jets, and testing gravitational phenomena. Nevertheless, these objects
are difficult to find in our Galaxy. The main goal of this work is to
increase the number of known systems of this kind, which should allow
better testing of high-energy phenomena and more realistic statistical
studies of this galactic population to be made.
We have developed an improved search strategy based on positional
cross-identification with very restrictive selection criteria to find
new MQs, taking advantage of more sensitive modern X-ray data. To do
this, we made combined use of the radio, infrared, and X-ray
properties of the sources, using different available catalogs.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table1.dat 83 86 X-ray properties of NVSS/XMM-Newton
cross-correlated sources
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See also:
II/246 : 2MASS All-Sky Catalog of Point Sources (Cutri+ 2003)
B/xmm : XMM-Newton Observation Log (XMM-Newton SOC, 2007)
VIII/65 : 1.4GHz NRAO VLA Sky Survey (NVSS) (Condon+ 1998)
Byte-by-byte Description of file: table1.dat
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Bytes Format Units Label Explanations
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1- 2 I2 --- Seq Sequential number
4- 18 A15 --- Name IAU name (HHMMSS.s+DDMMSS) (1)
20- 21 I2 h RAh Right ascension (J2000)
23- 24 I2 min RAm Right ascension (J2000)
26- 30 F5.2 s RAs Right ascension (J2000)
32 A1 --- DE- Declination sing (J2000)
33- 34 I2 deg DEd Declination sing (J2000)
36- 37 I2 arcmin DEm Declination sing (J2000)
39- 43 F5.2 arcsec DEs Declination sing (J2000)
45- 49 F5.2 --- HRx ?=- Hardness ratio (M-S)/(M+S) (2)
51- 55 F5.2 --- HRy ?=- Hardness ratio (H-S)/(H+S) (2)
57 A1 --- l_NH Limit flag on NH
58- 61 F4.2 10+22cm-2 NH ?=- Hydrogen column density
63- 66 F4.2 --- Gamma ?=- Power law model index
68- 74 F7.2 10-17W/m2 FX X-ray flux in the 0.2-12keV energy band (3)
76- 79 F4.1 10-17W/m2 e_FX rms uncertainty on FX
81- 82 I2 --- ID Identification flag (4)
83 A1 --- n_ID [*+t] Other observations (5)
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Note (1): Sources identified as 2XMMp JHHMMSS.s+DDMMSS in Simbad
Note (2): Where S is the soft 0.2-1.0keV band, M is the medium 1.0-2.0keV
band and H is the hard 2-12.0keV band.
Note (3): The X-ray flux computed in the SXSSC using an energy
conversion factor (ECF) in the 0.2-12keV energy band
(details in XMM CAL-TN-0023-v2.0.ps report).
Note (4): Indentification flag as follows:
1 = unidentified
2 = stars
3 = galaxy
4 = QSOs
5 = pulsar
6 = star forming region
7 = HII regions
8 = giant molecular clouds
9 = Herbig-Haro objects
10 = globular clusters
11 = cluster of galaxies.
Note (5): Notes as follows:
* = Source with radio detection at wavelength other than 20cm.
+ = Source with one 2MASS counterpart (Cutri et al., 2003,
Cat. II/246, Skrutskie et al., 2006AJ....131.1163S 2006AJ....131.1163S).
t = Source with two 2MASS counterpart (Cutri et al., 2003,
Cat. II/246, Skrutskie et al., 2006AJ....131.1163S 2006AJ....131.1163S).
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History:
From electronic version of the journal
(End) Patricia Vannier [CDS] 01-Feb-2008