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J/A+A/524/A64       The 54-month Palermo BAT-survey catalogue  (Cusumano+, 2010)

The Palermo Swift-BAT Hard X-ray Catalogue. III. Results after 54 months of sky survey. Cusumano G., La Parola V., Segreto A., Ferrigno C., Maselli A., Sbarufatti B., Romano P., Chincarini G., Giommi P., Masetti N., Moretti A., Parisi P., Tagliaferri G. <Astron. Astrophys. 524, A64 (2010)> =2010A&A...524A..64C
ADC_Keywords: X-ray sources ; Surveys ; Active gal. nuclei Mission_Name: Swift Keywords: catalogs - surveys - X-rays: general Abstract: We present the Second Palermo Swift-BAT hard X-ray catalogue obtained by analysing data acquired in the first 54 months of the Swift mission. Using our software dedicated to the analysis of data from coded mask telescopes, we analysed the BAT survey data in three energy bands (15-30keV, 15-70keV, 15-150keV), obtaining a list of 1256 detections above a significance threshold of 4.8 standard deviations. The identification of the source counterparts is pursued using two strategies: the analysis of field observations of soft X-ray instruments and cross-correlation of our catalogue with source databases. The survey covers 50% of the sky to a 15-150keV flux limit of 1.0x10-11erg/cm2/s and 9.2x10-12erg/cm2/s for |b|<10 and |b|>10, respectively. The Second Palermo Swift-BAT hard X-ray catalogue includes 1079 (∼86%) hard X-ray sources with an associated counterpart (26 with a double association and 2 with a triple association) and 177 BAT excesses (∼14%) that still lack a counterpart. The distribution of the BAT sources among the different object classes consists of ∼19% Galactic sources, ∼57% extragalactic sources, and ∼10% sources with a counterpart at softer energies whose nature has not yet been determined. About half of the BAT associated sources lack a counterpart in the ROSAT catalogues. This suggests that either moderate or strong absorption may be preventing their detection in the ROSAT energy band. The comparison of our BAT catalogue with the Fermi Large Area Telescope First Source Catalogue identifies 59 BAT/Fermi correspondences: 48 blazars, 3 Seyfert galaxies, 1 interacting galaxy, 3 high mass X-ray binaries, and 4 pulsars/supernova remnants. This small number of correspondences indicates that different populations make the sky shine in these two different energy bands. Description: The 2nd Palermo BAT Catalogue contains the 1256 sources detected in the first 54 months of BAT survey data. It include the BAT position, together with the offset with respect to the identified counterpart (if any), the detection significance, the flux in the 15-150keV band, the hardness ratio in the [30-150]/[15-150] bands and the source luminosity, when a redshift is reported. It also contains information on the correlation of the BAT sources with the INTEGRAL, ROSAT and Fermi catalogue. Multiple lines are present for a single BAT source if it has been associated to more than one counterpart. File Summary:
FileName Lrecl Records Explanations
ReadMe 80 . This file m54.dat 148 1286 Palermo BAT survey catalogue
See also: J/A+A/510/A48 : Palermo Swift-BAT Hard X-ray Catalogue (Cusumano+, 2010) http://www.ifc.inaf.it/cgi-bin/INAF/pub.cgi?href=activities/bat/index.html : The Palermo BAT survey catalogue at IASFPa Byte-by-byte Description of file: m54.dat
Bytes Format Units Label Explanations
1- 4 A4 --- --- [2PBC] 6- 17 A12 --- 2PBC Source Name in the Palermo BAT Catalogue (JHHMM.s+DDMM) 19- 42 A24 --- CName Counterpart Name 44- 46 A3 --- CType Counterpart Type 48- 54 F7.3 deg RAdeg Right ascension (J2000.0) 56- 62 F7.3 deg DEdeg Declination (J2000.0) 64- 67 F4.2 arcmin eBox Error Box of the BAT detected source 69- 73 F5.2 arcmin Offset ? Distance between BAT pos and counterpart pos 75- 81 F7.2 --- S/N S/N of the BAT detection 83- 93 E11.2 mW/m2 Flux Flux in the 15-150keV band 95-102 E8.2 mW/m2 e_Flux Error on Flux 104-108 F5.3 --- HR ? Hardness ratio [30-150keV]/[15-150keV] 110-114 F5.3 --- e_HR ? Error on HR 116-121 F6.4 --- z ? Redshift 123-127 F5.2 [10-7W] logL ? Luminosity (log) 129-134 F6.2 --- Var Variability index 136 I1 --- fd [1/3] Energy band with best detection (1) 138 A1 --- fX [Y/N] Yes if already reported in other hard X-ray catalogues 140 A1 --- fG [hl] high/low position on the Galactic plane (2) 142 A1 --- fI [ab] Identification strategy (3) 144 A1 --- INT [I] Source seen by INTEGRAL 146 A1 --- ROS [fb] Source correlated with ROSAT source (4) 148 A1 --- Fer [F?] Source correlated with Fermi source (5)
Note (1): Energy band with best detection flag as follows: 0 = 15-150keV 2 = 15-30keV 3 = 15-70keV Note (2): Position on the Galactic plane flag as follows: h = (high) if |b|>5 l = (low) if |b|<5 Note (3): Identification strategy flag as follows: a = analysis of field observations of soft X-ray instruments b = cross-correlation with the SIMBAD databases. Note (4): Source correlated with ROSAT source flag as follows: f = correlated with a ROSAT Faint source b = correlated with a ROSAT Bright source Note (5): Source correlated with Fermi source as follows: F = the BAT source and the Fermi source have the same counterpart ? = the BAT source and the Fermi source are consistent in position but either are not associated to the same counterpart or the Fermi source has no associated counterpart
Acknowledgements: Valentina La Parola, laparola(at)ifc.inaf.it References: Segreto et al., Paper I 2010A&A...510A..47S Cusumano et al., Paper II 2010A&A...510A..48C, Cat. J/A+A/510/A48
(End) Giancarlo Cusumano [INAF-IASFPa, Italy], P. Vannier [CDS] 07-Sep-2010
The document above follows the rules of the Standard Description for Astronomical Catalogues.From this documentation it is possible to generate f77 program to load files into arrays or line by line

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