J/ApJ/636/765 Second IBIS/ISGRI soft gamma-ray survey catalog (Bird+, 2006)
The second IBIS/ISGRI soft gamma-ray survey catalog.
Bird A.J., Barlow E.J., Bassani L., Bazzano A., Belanger G., Bodaghee A.,
Capitanio F., Dean A.J., Fiocchi M., Hill A.B., Lebrun F., Malizia A.,
Mas-hesse J.M., Molina M., Moran L., Renaud M., Sguera V., Shaw S.E.,
Stephen J.B., Terrier R., Ubertini P., Walter R., Willis D.R., Winkler C.
<Astrophys. J., 636, 765-776 (2006)>
=2006ApJ...636..765B 2006ApJ...636..765B
ADC_Keywords: Surveys ; Gamma rays
Mission_Name: INTEGRAL
Keywords: Galaxy: general - gamma rays: observations - surveys
Abstract:
In this paper we report the second soft gamma-ray source catalog
obtained with the IBIS/ISGRI gamma-ray imager on board the INTEGRAL
satellite. The scientific data set is based on more than 10Ms of
high-quality observations performed during the first 2 years of Core
Program and public IBIS/ISGRI observations, and covers 50% of the
whole sky. The main aim of the first survey was to scan
systematically, for the first time at energies above 20keV, the whole
Galactic plane to achieve a limiting sensitivity of 1mCrab in the
central radian. The target of the second year of the INTEGRAL mission
lifetime was to expand as much as possible our knowledge of the soft
gamma-ray sky, with the same limiting sensitivity, to at least 50% of
the whole sky, mainly by including a substantial coverage of
extragalactic fields. This catalog comprises more than 200 high-energy
sources detected in the energy range 20-100keV, including new
transients not active during the first year of operation, faint
persistent objects revealed with longer exposure time, and several
Galactic and extragalactic sources in sky regions not observed in the
first survey. The mean position error for all the sources detected
with significance above 10σ is 40", enough to identify most of
them with a known X-ray counterpart and to unveil the nature of most
of the strongly absorbed ones, even though they are very difficult to
detect in X-rays.
Description:
The data are collected with the low-energy array, ISGRI (INTEGRAL Soft
Gamma-Ray Imager). This "all sky" catalog uses mosaic image data from
the first 2 years of Core Program observations, including the Galactic
plane scans, Galactic center deep exposures (GCDEs), and pointed
observations from the first year of public data.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table2.dat 112 209 2nd IBIS/ISGRI catalog
notes.dat 77 30 Notes
types.dat 55 27 Source types
refs.dat 130 69 References
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See also:
J/ApJ/607/L33 : First IBIS Catalog: 20-100keV (Bird+, 2004)
V/123 : Catalog of Cataclysmic Variables (Downes+ 2001-2006)
V/106 : Catalogue of X-ray binaries (Liu+ 2001)
VII/248 : Quasars and Active Galactic Nuclei (12th Ed.) (Veron+ 2006)
J/ApJS/154/585 : BATSE earth occultation deep sample results (Harmon+, 2004)
Byte-by-byte Description of file: table2.dat
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Bytes Format Units Label Explanations
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1- 17 A17 --- Name Source name
19- 21 A3 --- n_Name Flag on Name (detailed in notes.dat)
23- 29 F7.3 deg RAdeg Right Ascension in decimal degrees (J2000)
31- 37 F7.3 deg DEdeg Declination in decimal degrees (J2000)
39- 41 F3.1 arcmin e_pos Positional error (1)
43 A1 --- l_F20-40 Limit flag on F20-40
44- 49 F6.1 --- F20-40 ? The 20-40keV flux in units of mCrab (2)
51- 53 F3.1 --- e_F20-40 ? Uncertainty in F20-40 in units of mCrab
55 A1 --- l_F40-100 Limit flag on F40-100
56- 61 F6.1 --- F40-100 ? The 40-100keV flux in units of mCrab (3)
63- 65 F3.1 --- e_F40-100 ? Uncertainty in F40-100 in units of mCrab
67- 72 F6.1 --- Sig Maximum significance
73- 75 A3 --- f_Sig Flag on Sig (4)
77- 80 I4 ks Exp Exposure time
82- 99 A18 --- Type Source type (detailed in types.dat)
101-112 A12 --- Ref Reference(s) (detailed in refs.dat)
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Note (1): Position errors are expressed as radius of 1σ error circle.
Note (2): Appropriate conversion factor for 20-40keV range:
10mCrab=7.57x10-11mW/m2=1.71x10-3ph/cm2/s1.
Note (3): Appropriate conversion factor for 40-100keV range:
10mCrab=9.42x10-11mW/m2=9.67x10-4ph/cm2/s1.
Note (4): Maximimum significance is quoted in either:
* = 20-40keV band;
** = 20-100keV band;
*** = 30-60keV band;
NULL = significance in one revolution.
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Byte-by-byte Description of file: notes.dat
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Bytes Format Units Label Explanations
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1 A1 --- Note Note
3- 77 A75 --- Com Comment
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Byte-by-byte Description of file: types.dat
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Bytes Format Units Label Explanations
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1- 10 A10 --- Type Source type
12- 55 A44 --- Def Definition
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Byte-by-byte Description of file: refs.dat
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Bytes Format Units Label Explanations
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1- 2 I2 --- Ref Reference number
4- 22 A19 --- Bibcode Bibcode
24- 46 A23 --- Aut Author's name
48-130 A83 --- Com Comment
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History:
From electronic version of the journal
(End) Greg Schwarz [AAS], Marianne Brouty [CDS] 29-Dec-2006