J/ApJS/161/9 X-ray survey of the NDWFS Bootes field (Kenter+, 2005)
XBootes: an X-ray survey of the NDWFS Bootes field.
II. The X-ray source catalog.
Kenter A., Murray S.S., Forman W.R., Jones C., Green P., Kochanek C.S.,
Vikhlinin A., Fabricant D., Fazio G., Brand K., Brown M.J.I., Dey A.,
Jannuzi B.T., Najita J., McNamara B., Shields J., Rieke M.
<Astrophys. J. Suppl. Ser., 161, 9-20 (2005)>
=2005ApJS..161....9K 2005ApJS..161....9K
ADC_Keywords: X-ray sources ; Active gal. nuclei ; Surveys
Keywords: catalogs - galaxies: active - surveys - X-rays: general
Abstract:
We present results from a Chandra survey of the 9deg2 Bootes field
of the NOAO Deep Wide-Field Survey (NDWFS). This XBootes survey
consists of 126 separate contiguous ACIS-I observations each of
approximately 5000s in duration. These unique Chandra observations
allow us to search for large-scale structure and to calculate X-ray
source statistics over a wide, contiguous field of view with arcsecond
angular resolution and uniform coverage. The full 0.5-7keV band n≥4
count list has 3293 point sources. In addition to the point sources,
43 extended sources have been detected, consistent with the depth of
these observations and the number counts of clusters. We present here
the X-ray catalog for the XBootes survey, including source positions,
X-ray fluxes, hardness ratios, and their uncertainties.
Description:
The 126 pointings comprising this survey (XBootes) are centered on
RA(J2000.0)∼14h32m and DE(J2000.0)∼34°06' and were completed
during March and April of 2003.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table1.dat 84 43 Properties of extended sources in the XBootes Survey
table3.dat 137 3293 Properties of point sources in the XBootes survey
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See also:
J/ApJ/641/140 : Optical counterparts in the NDWFS Bootes field (Brand+, 2006)
J/AJ/130/923 : Faint radio sources in the NOAO Bootes field (Wrobel+, 2005)
J/AJ/127/213 : LALA Bootes field X-ray source catalog (Wang+, 2004)
Byte-by-byte Description of file: table1.dat
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Bytes Format Units Label Explanations
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1- 6 A6 --- --- [CXO XB]
8- 23 A16 --- CXOXB The CXOXB name (JHHMMSS.S+DDMMSS)
25- 26 I2 h RAh Hour of Right Ascension (J2000.0)
28- 29 I2 min RAm Minute of Right Ascension (J2000.0)
31- 35 F5.2 s RAs Second of Tight Ascension (J2000.0)
36 A1 --- DE- Sign of the Declination (J2000.0)
37- 38 I2 deg DEd Degree of Declination (J2000.0)
40- 41 I2 arcmin DEm Arcminute of Declination (J2000.0)
43- 47 F5.2 arcsec DEs Arcsecond of Declination (J2000.0)
49- 52 F4.2 arcsec ePos Positional error
54- 57 F4.1 arcsec Size Size of CXOXB source
59- 61 F3.1 arcsec e_Size Error on Size
63- 68 F6.2 ct Scts Net counts in the soft (0.5-2keV) band
70- 73 F4.1 ct e_Scts Error on Scts
75- 79 F5.2 10-17W/m2 Sflux The 0.5-2keV flux (1)
81- 84 F4.2 10-17W/m2 e_Sflux Error on Sflux (1)
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Note (1): Originally in units of 10-14erg/s/cm2/s.
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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- 5 A5 --- --- [CXOXB]
7- 22 A16 --- CXOXB The CXOXB name (JHHMMSS.S+DDMMSS)
24- 25 I2 h RAh Hour of Right Ascension (J2000)
27- 28 I2 min RAm Minute of Right Ascension (J2000)
30- 34 F5.2 s RAs Second of Right Ascension (J2000)
35 A1 --- DE- Sign of the Declination (J2000)
36- 37 I2 deg DEd Degree of Declination (J2000)
39- 40 I2 arcmin DEm Arcminute of Declination (J2000)
42- 46 F5.2 arcsec DEs Arcsecond of Declination (J2000)
48- 51 F4.2 arcsec ePos Uncertainty in the position
53- 56 I4 ct Fcts Counts in the full (0.5-7keV) band
58- 60 I3 ct Scts Counts in the soft (0.5-2keV) band
62- 64 I3 ct Hcts Counts in the hard (2-7keV) band
66- 71 F6.2 10-17W/m2 Fflux The 0.5-7keV flux (1)
73- 76 F4.2 10-17W/m2 e_Fflux Uncertainty in F0.5-7
78- 81 A4 --- f_Sflux Limit flag on F0.5-2 (2)
82- 87 F6.2 10-17W/m2 Sflux The 0.5-2 keV flux (1)
89- 92 F4.2 10-17W/m2 e_Sflux ? Uncertainty in F0.5-2
94- 97 A4 --- f_Hflux Limit flag on F2-7 (2)
98-102 F5.2 10-17W/m2 Hflux The 2-7 keV flux (1)
104-107 F4.2 10-17W/m2 e_Hflux ? Uncertainty in F2-7
109-115 F7.2 s Exp The exposure time
117-121 F5.3 --- Frac Effective area (3)
123-127 F5.2 --- HR ? Hardness ratio (2)
129-132 F4.2 --- E_HR ? Upper limit on HR
134-137 F4.2 --- e_HR ? Lower limit on HR
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Note (1): Originally in units of 10-14ergs/cm2/s.
Calculated assuming Galactic absorption (NH=1020cm-3), an on-axis
point source, and a common X-ray AGN source power law spectrum with a
photon index Γ=1.7. Counts to flux conversion takes into account
spectral assumption (ECF), background, effective area and time.
Note (2): The hardness ratio of the point sources is defined by
HR=(H-S)/(H+S) where S is the number of counts detected in the soft
(0.5-2keV) band and H is the number of counts detected in the hard
(2-7keV) band.
Note (3): Effective area relative to on-axis effective area.
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History:
* 06-Jun-2006: From electronic version of the journal
* 01-Jul-2008: In table 3, the name CXOXB J143143.2+322560
was changed into CXOXB J143143.2+322600.
* 27-Apr-2009: Unit of fluxes was incorrect, is 10-14erg/s/cm2
(was originally indicated as 10-15erg/s/cm2)
References:
Murray et al., Paper I 2005ApJS..161....1M 2005ApJS..161....1M
(End) Greg Schwarz [AAS], Marianne Brouty [CDS] 06-Jun-2006