INTIBISGAL - INTEGRAL IBIS 9-Year Galactic Hard X-Ray Survey Catalog

Overview

The INTEGRAL observatory operating in a hard X-ray/gamma domain has gathered a large observational data set over nine years starting in 2003. Most of the observing time was dedicated to the Galactic source population study, making possible the deepest Galactic survey in hard X-rays ever compiled.

The authors aimed to perform a Galactic survey that could be used as the basis of Galactic source population studies, and performed mapping of the Milky Way in hard X-rays over the maximum exposure available at Galactic latitudes |b| < 17.5 degrees. They used sky reconstruction algorithms especially developed for the high quality imaging of INTEGRAL/IBIS data. In their paper. they presented sky images, sensitivity maps, and catalogs of detected sources in the three energy bands 17 - 60, 17 - 35, and 35 - 80 keV in the Galactic plane at |b| < 17.5 degrees. The total number of sources in the reference 17 - 60 keV band includes 402 objects exceeding a 4.7-sigma detection threshold on the nine-year time-averaged map. Among the identified sources with known and tentatively identified natures, 253 are Galactic objects (108 low-mass X-ray binaries, 82 high-mass X-ray binaries, 36 cataclysmic variables, and 27 are of other types), and 115 are extragalactic objects, including 112 active galactic nuclei and 3 galaxy clusters. The sample of Galactic sources with S/N > 4.7 sigma has an identification completeness of ~92%, which is valuable for population studies. Since the survey is based on the nine-year sky maps, it is optimized for persistent sources and may be biased against finding transients.

This table contains the catalog of 402 INTEGRAL sources exceeding the detection threshold in the 17 - 60 keV energy band.

Catalog Bibcode

2012A&A...545A..27K

References

INTEGRAL/IBIS nine-year Galactic hard X-Ray survey.
    Krivonos R., Tsygankov S., Lutovinov S., Revnivtsev M., Churazov E.,
    Sunyaev R.
    <Astron. Astrophys. 545, A27 (2012)>
    =2012A&A...545A..27K

Provenance

This table was created by the HEASARC in September 2012 based on CDS CATALOG J/A+A/545/A27 file catalog.dat.

Parameters

Source_Number
A unique source number for each source in the catalog in order of increasing J2000.0 Right Ascension.

Name
The source name. Their common names are given for sources whose nature was known before their detection by INTEGRAL. Sources discovered by INTEGRAL or those whose nature was established thanks to INTEGRAL observations are named with an 'IGR' prefix.

RA
The Right Ascension of the INTEGRAL source in the selected equinox. This was given in J2000.0 decimal degrees to a precision of 0.001 degrees (3.6 arcseconds) in the original table.

Dec
The Declination of the INTEGRAL source in the selected equinox. This was given in J2000.0 decimal degrees to a precision of 0.001 degrees (3.6 arcseconds) in the original table.

LII
The Galactic Longitude of the INTEGRAL source.

BII
The Galactic Latitude of the INTEGRAL source.

Confusion_Flag
This flag paramter is set to 1 to indicate the presence of spatial confusion. In such cases, the source flux should be taken with caution. In the notes parameter, the presence of spatial confusion with the source with source number XXX is indicated by the notation 'CXXX'.

Flux
The time-averaged source flux in the 17 - 60 keV band, in milliCrabs. The source flux was measured in the nine-year time-averaged map (Dec 2002 - Jan 2011). In this energy band, 1 mCrab is equivalent to 1.43E-11 erg s^-1 cm^-2.

Flux_Error
The uncertainty in the time-averaged source flux in the 17 - 60 keV band, in milliCrabs.

SB_Flux
The time-averaged source flux in the 17 - 35 keV band, in milliCrabs. The source flux was measured in the nine-year time-averaged map (Dec 2002 - Jan 2011). In this energy band, 1 mCrab is equivalent to 8.41E-12 erg s^-1 cm^-2.

SB_Flux_Error
The uncertainty in the time-averaged source flux in the 17 - 35 keV band, in milliCrabs.

HB_Flux
The time-averaged source flux in the 35 - 80 keV band, in milliCrabs. The source flux was measured in the nine-year time-averaged map (Dec 2002 - Jan 2011). In this energy band, 1 mCrab is equivalent to 8.92E-12 erg s^-1 cm^-2.

HB_Flux_Error
The uncertainty in the time-averaged source flux in the 35 - 80 keV band, in milliCrabs.

Source_Type
The general astrophysical type of the object as follows:

             LMXB    = low-mass X-ray binary
             HMXB    = high-mass X-ray binary
             AGN     = active galactic nucleus
             SNR/PWN = supernova remnant/pulsar wind nebula
             CV      = cataclysmic variable
             PSR     = isolated pulsar or pulsar wind nebula
             SGR     = soft gamma repeater
            SymbStr  = symbiotic star
            Cluster  = cluster of galaxies
            NucStrCl = Galactiv nuclear star cluster

The presence of a question mark indicates that the specified type is not firmly determined and still needs to be confirmed.

Notes
Additional notes such as source type subclass, redshift information, source confusion information, and/or alternative source names. The presence of spatial confusion with the source with source number XXX is indicated by the notation 'CXXX'.

Ref_Bibcode_1
The ADS bibcode for the primary reference for the source.

Ref_1
The name of the first author and the shortened publication information for the primary reference for the source. These are mainly provided for new sources and are related to their discovery and/or nature. Papers describing a routine analysis of a given source, e.g.. the confirmation of their nature, a refined position, etc. are not referenced.

Ref_Bibcode_2
The ADS bibcode for the secondary reference for the source.

Ref_2
The name of the first author and the shortened publication information for the secondary reference for the source. These are mainly provided for new sources and are related to their discovery and/or nature. Papers describing a routine analysis of a given source, e.g.. the confirmation of their nature, a refined position, etc. are not referenced.

Class
The HEASARC Browse object classification for the source, based on the source_type parameter value.

Contact Person

Questions regarding the INTIBISGAL database table can be addressed to the HEASARC Help Desk.

Page Author: Browse Software Development Team
Last Modified: Monday, 16-Sep-2024 17:29:16 EDT