J/A+A/547/A57 Swift X-ray Telescope Cluster Survey (Tundo+, 2012)
The Swift X-ray Telescope Cluster Survey:
data reduction and cluster catalog for the GRB fields.
Tundo E., Moretti A., Tozzi P., Teng L., Rosati P., Tagliaferri G.,
Campana S.
<Astron. Astrophys. 547, A57 (2012)>
=2012A&A...547A..57T 2012A&A...547A..57T
ADC_Keywords: Clusters, galaxy ; X-ray sources
Keywords: galaxies: clusters: general - galaxies: high-redshift -
cosmology: observations - X-ray: galaxies: clusters - surveys -
catalogs
Abstract:
We present a new sample of X-ray selected galaxy groups and clusters
serendipitously observed with Swift and the X-ray Telescope (XRT). We
searched the XRT archive for extended sources among 336 GRB fields
with galactic latitude |b|>20°. Our selection algorithm yields a
flux-limited sample of 72 X-ray groups and clusters with a well
defined selection function and negligible contamination. The sky
coverage of the survey goes from the total 40deg2 to 1deg2 at a
flux limit of 10-14erg/s/cm^-2 (0.5-2keV). All the X-ray sources
are detected in the Swift-XRT soft (0.5-2keV) band.
Description:
We present the 72 SXCS sources. For each source the identification Id,
equatorial coordinates, exposure time corrected for vignetting,
Galactic absorption, extraction radius Rext, aperture photometry
within R_ext and total energy flux are given. We remark that the
photometry of our extended sources refers to the extraction radius
R_ext defined as the radius where the fitted surface brightness falls
below the measured local background, while the total energy flux
include the correction factor cf for the flux lost beyond Rext.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table2.dat 88 72 SXCS sources serendipitously observed with Swift
X-ray Telescope (XRT)
table3.dat 86 30 List of counterparts of SXCS sources
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See also:
J/A+A/528/A122 : SwiftFT catalog (Puccetti+, 2011)
Byte-by-byte Description of file: table2.dat
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Bytes Format Units Label Explanations
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1- 2 A2 --- --- [SW]
3- 16 A14 --- Name SXCS Name, SW JHHMMSS+DDMMSS
19- 27 F9.5 deg RAdeg Right ascension (J2000)
30- 38 F9.5 deg DEdeg Declination (J2000)
41- 47 I7 s Texp Vignetting corrected exposure time
50- 54 F5.2 10+20cm-2 NH Galactic absorption
57- 58 I2 arcsec Rext Extraction radius
61- 65 I5 ct CtS Soft net counts (0.5-2keV)
67- 69 I3 ct e_CtS Error on Soft net counts
72- 76 F5.1 --- SNR Soft signal to noise ratio (0.5-2keV)
79- 83 F5.1 10-17W/m2 SFlux Soft flux (0.5-2keV) (10-14erg/cm2/s)
85- 88 F4.1 10-17W/m2 e_SFlux Error on Soft flux
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Byte-by-byte Description of file: table3.dat
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Bytes Format Units Label Explanations
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1- 2 A2 --- --- [SW]
3- 16 A14 --- Name SXCS Name, SW JHHMMSS+DDMMSS
18- 28 A11 --- Cluster Cluster conterpart survey name (1)
30- 35 F6.4 arcmin DistC ?=- Distance between Source and Cluster
37- 43 F7.5 --- zC [0.06/0.6]?=- Cluster redshift
44 A1 --- n_zC [p] p for photometric redshift,
else spectroscopic
46- 51 A6 --- Galaxy Galaxy conterpart survey name (1)
53- 57 F5.3 arcmin DistG ?=- Distance between Source and Galaxy
59- 66 F8.6 --- zG [0.06/0.5]?=- Galaxy redshift
67 A1 --- n_zG [p] p for photometric redshift,
else spectroscopic
69- 75 A7 --- X-ray X-ray counterpart survey name (1)
77- 81 F5.3 --- zX [0.05/1.4]?=- X-ray source redshift
82 A1 --- --- [/]
83- 86 F4.2 --- zX2 ?=- Second value of X-ray source redshift
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Note (1): Surveys as follows:
AMF = Szabo et al. (2011, Cat. J/ApJ/736/21)
Abell = Abell et al. (1989, Cat. VII/110)
CGCG = Zwicky et al. (1963, Cat. VII/49
EDCC = EDCC, Lumsden et al. (1992, Cat. VII/175)
GMBCG = Hao et al. (2010, J/ApJS/191/254)
MaxBCG = Koester et al. (2007, Cat. J/ApJ/660/239)
NSCS = Gal et al. (2003, Cat. J/AJ/125/2064);
Lopes et al. (2004, Cat. J/AJ/128/1017)
SDSS-C4-DR3 = Miller et al. (2005, Cat. J/AJ/130/968);
von der Linden et al. (2007, Cat. J/MNRAS/379/867)
WHL = Wen et al. (2009, Cat. J/ApJS/183/197)
2DFGRS = Colless et al. (1998, Cat. VII/250)
2MASX = Skrutskie et al. (2003, Cat. VII/233)
LCRS = Shectman et al. (1996, Cat. VII/203)
MCG = Vorontsov-Velyaminov & Arkhipova (1962, Cat. VII/100)
SDSS = http://www.sdss.org
1AXG = Ueda et al. (2001, Cat. J/ApJS/133/1)
1WGA = White et al., (2000, Cat. IX/31)
CXO = Evans et al. (2012, Cat. IX/45)
RXJ/WGA = Voges et al. (1999, Cat. IX/10);
White et al., (2000, Cat. IX/31)
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Acknowledgements:
Elena Tundo, tundo(at)oats.inaf.it
References:
Tozzi et al. Paper II. 2014A&A...567A..89T 2014A&A...567A..89T Cat. J/A+A/567/A89
Liu et al. Paper III. 2015ApJS..216...28L 2015ApJS..216...28L Cat. J/ApJS/216/28
History:
22-Mar-2013: on-line version
23-Mar-2015: table3 added (from electronic version)
(End) Elena Tundo [OATS Italy], Patricia Vannier [CDS] 15-Aug-2012