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
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:
FileName Lrecl Records Explanations
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
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
Bytes Format Units Label Explanations
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)
Note (1): Originally in units of 10-14erg/s/cm2/s.
Byte-by-byte Description of file: table3.dat
Bytes Format Units Label Explanations
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
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.
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
(End) Greg Schwarz [AAS], Marianne Brouty [CDS] 06-Jun-2006