J/A+A/510/A48 Palermo Swift-BAT Hard X-ray Catalogue (Cusumano+, 2010)
The Palermo Swift-BAT Hard X-ray Catalogue.
II. Results after 39 months of sky survey.
Cusumano G., La Parola V., Segreto A., Mangano V., Ferrigno C., Maselli A.,
Romano P., Mineo T., Sbarufatti B., Campana S., Chincarini G., Giommi P.,
Masetti N., Moretti A., Tagliaferri G.
<Astron. Astrophys. 510, A48 (2010)>
=2010A&A...510A..48C 2010A&A...510A..48C
ADC_Keywords: X-ray sources ; Surveys ; Active gal. nuclei
Mission_Name: Swift
Keywords: X-rays: general - catalogs - surveys
Abstract:
We present the Palermo Swift-BAT hard X-ray catalogue obtained from
the analysis of the the data relative to the first 39 months of the
Swift mission. We have developed a dedicated software to perform data
reduction, mosaicking and source detection on the BAT survey data. We
analyzed the BAT dataset in three energy bands (14-150keV, 14-30keV,
14-70keV), obtaining a list of 962 detections above a significance
threshold of 4.8 standard deviations. The identification of the source
counterparts was pursued using three strategies: cross-correlation
with published hard X-ray catalogues, analysis of field observations
of soft X-ray instruments, cross-correlation with the SIMBAD
database. The survey covers 90% of the sky down to a flux limit of
2.5x10-11erg/cm2/s and 50% of the sky down to a flux limit of
1.8x10-11erg/cm2/s in the 14-150keV band. We derived a catalogue
of 754 identified sources, of which ∼69% are extragalactic, ∼27% are
Galactic objects, ∼4% are already known X-ray or gamma ray emitters
whose nature has not been determined yet. The integrated flux of the
extragalactic sample is ∼1% of the Cosmic X-ray background in the
14-150keV range.
Description:
The catalogue contains the 754 sources detected and identified in the
first 39 months of BAT survey data. It include the BAT position,
together with the offset with respect to the identified counterpart,
the detection significance, the flux in the 15-150keV band (evaluated
assuming a Crab-like spectrum), the hardness ratio in the
[30-150]/[15-30] bands and the source luminosity, together with the
counterpart redshift.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
catalog.dat 168 754 Palermo BAT survey catalogue (table2 in the paper)
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See also:
J/ApJ/633/L77 : SWIFT/BAT detections of AGN (Markwardt+, 2005)
J/ApJ/678/102 : BAT X-ray survey. I. (Ajello+, 2008)
J/ApJ/673/96 : BAT X-ray Survey - III (Ajello+, 2008)
J/ApJ/681/113 : Swift BAT survey of AGNs (Tueller+, 2008)
Byte-by-byte Description of file: catalog.dat
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Bytes Format Units Label Explanations
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1- 3 A3 --- --- [PBC]
5- 16 A12 --- PBC Source Name in the Palermo BAT Catalogue
(JHHMM.m+DDMM)
19- 42 A24 --- CName Counterpart Name
45- 47 A3 --- CType Counterpart Type
50- 59 F10.6 deg RAdeg Right ascension in decimal degrees (J2000.0)
62- 71 F10.6 deg DEdeg Declination in decimal degrees (J2000.0)
74- 78 F5.3 arcmin eBox Error Box of the BAT detected source
81- 85 F5.3 arcmin off Distance between BAT pos and counterpart pos
88- 94 F7.2 --- S/N S/N of the BAT detection
98-105 E8.3 mW/m2 Flux Flux in the 14-150keV band (1)
109-116 E8.3 mW/m2 e_Flux Error on Flux
119-125 F7.4 --- HR ? Hardness ratio [30-150keV]/[14-30keV] (2)
129-134 F6.4 --- e_HR ? Error on HR
137-145 F9.7 --- z ? Redshift
148-153 F6.3 [10-7W] logL ? Luminosity in the 14-150keV (log10)
156 I1 --- fd [1/3] Energy band with best detection:
1=14-150keV, 2=14-30keV, 3=14-70keV
159 I1 --- fE [0/3] Energy band used for flux
calculation (4)
162 A1 --- fX [n/y] Yes if already reported in other hard
X-ray catalogues
165 A1 --- fI [abc] Identification strategy (5)
168 A1 --- fG [hl] Position on the Galactic plane:
h=|b|>5 (high), l=|b|<5 (low)
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Note (1): Calculated assuming a Crab-like spectrum
Note (2): The hardness ratio is evaluated only when the source is detected
both in the 15-30keV band and in the 15-150keV band.
Note (4): If the source is not detected in the 14-150keV band, the flux
is calculated in the largest available band and extrapolated in the
14-150keV band. The band is 1=14-150keV, 2=14-30keV, 3=14-70keV
Note (5): Identification strategy flag as follows:
a = cross-correlation with published hard X-ray catalogues
b = analysis of field observations of soft X-ray instruments
c = cross-correlation with the SIMBAD databases.
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Acknowledgements:
Giancarlo Cusumano, cusumano(at)ifc.inaf.it,
Valentina La Parola, laparola(at)ifc.inaf.it
(End) G. Cusumano [INAF-IASFPa, Italy], P. Vannier [CDS] 17-Sep-2009