J/MNRAS/426/1750 INTEGRAL/IBIS AGN catalogue (Malizia+, 2012)
The INTEGRAL/IBIS AGN catalogue.
I. X-ray absorption properties versus optical classification.
Malizia A., Bassani L., Bazzano A., Bird A.J., Masetti N., Panessa F.,
Stephen J.B., Ubertini P.
<Mon. Not. R. Astron. Soc., 426, 1750-1766 (2012)>
=2012MNRAS.426.1750M 2012MNRAS.426.1750M
ADC_Keywords: Active gal. nuclei ; Gamma rays ; X-ray sources
Keywords: catalogues - surveys
Abstract:
In this work we present the most comprehensive INTEGRAL active
galactic nucleus (AGN) sample. It lists 272 AGN for which we have
secure optical identifications, precise optical spectroscopy and
measured redshift values plus X-ray spectral information, i.e. 2-10
and 20-100keV fluxes plus column density. Here we mainly use this
sample to study the absorption properties of active galaxies, to probe
new AGN classes and to test the AGN unification scheme.
Description:
In the fourth INTEGRAL/IBIS survey (Bird et al. 2010, Cat.
J/ApJS/186/1), there are 234 objects which have been identified with
AGN. To this set of sources, we have then added 38 galaxies listed in
the INTEGRAL all-sky survey by Krivonos et al. (2007, Cat.
J/A+A/475/775) updated on the website
(http://hea.iki.rssi.ru/integral/survey/catalog.php) but not included
in the Bird et al. catalogue due to the different sky coverage (see
source names in bold in Appendix Appendix). The final data set
presented and discussed in this work therefore comprises 272 AGN (last
updated in 2011 March), which represents the most complete view of the
INTEGRAL extragalactic sky to date.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
tablea1.dat 114 272 INTEGRAL/IBIS AGN Catalogue
refs.dat 93 96 References
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See also:
J/A+A/475/775 : INTEGRAL all-sky survey of hard X-ray sources (Krivonos+, 2007)
J/ApJS/186/1 : The 4th IBIS/ISGRI soft gamma-ray survey catalog (Bird+, 2010)
Byte-by-byte Description of file: tablea1.dat
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Bytes Format Units Label Explanations
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1- 21 A21 --- Name Source name
22 A1 --- n_Name Individual note (1)
23 A1 --- f_Name [*] * for hard X-ray sources (2)
25- 26 I2 h RAh Right ascension (J2000)
28- 29 I2 min RAm Right ascension (J2000)
31- 35 F5.2 s RAs Right ascension (J2000)
37 A1 --- DE- Declination sign (J2000)
38- 39 I2 deg DEd Declination (J2000)
41- 42 I2 arcmin DEm Declination (J2000)
44- 47 F4.1 arcsec DEs Declination (J2000)
49- 55 F7.5 --- z ? Redshift
57- 74 A18 --- Class Classification of the source (4)
76 A1 --- l_FH Limit flag on FH
77- 81 F5.2 10-14W/m2 FH Hard (20-100keV) flux (10-11erg/cm2/s)
83 A1 --- l_FS Limit flag on FS
84- 91 F8.5 10-14W/m2 FS Soft (2-10keV) flux (in 10-11erg/cm2/s)
92- 93 A2 --- n_FS [* ] * for flux variability
94 A1 --- l_logNH Limit flag on logNH
95- 99 F5.2 [cm-2] logNH Hydrogen column density
100 A1 --- n_logNH [f*] fixed or measured logNH (3)
101-105 F5.2 [cm-2] b_logNH ? Lower value of logNH interval
106 A1 --- --- [-]
107-111 F5.2 [cm-2] B_logNH ? Upper value of logNH interval
113-114 I2 --- Ref Reference, in refs.dat file
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Note (1): Notes as follows:
a = Interacting galaxies where the INTEGRAL/IBIS detection is referred to
both galaxies and the 20-100keV flux has been estimated to be 50 per
cent to each galaxy (see the text for details).
b = This source has a wrong name (ESO 548-G01) in the fourth IBIS catalogue,
here the right name and the right redshift have been reported.
c = A different value of column density comes from a published Chandra
observation (Tomsick et al., 2007ATel.1018....1T 2007ATel.1018....1T) where it is not clear
whether the authors include Galactic absorption or not in their estimate
of NH. This source has now been observed by XRT and these more recent
data provide a column density of NH=0.950.34-0.30_x1022cm-2;
since the Galactic absorption in the source direction is ∼1022cm-2,
it is very likely that the Chandra estimate includes both Galactic and
intrinsic absorption.
d = INTEGRAL flux comes from the whole map and has to be considered as a
lower limit since the source has been best detected in a revolution map
likely during a flare. Its variability and its black hole mass
(Masetti et al. 2010A&A...519A..96M 2010A&A...519A..96M) are typical of hard X-ray selected
blazars; however, the lack of radio detection poses still some doubts
on the blazar nature.
e = ESO 138-1 and NGC 6221 are blended in the IBIS maps and through a
simulation we have estimated the contribution of each source in
the 20-100keV band which is almost 50 per cent.
f = For this source we have very recently obtained XMM data.
The preliminary analysis indicates that the column density is
0.81+0.05-0.04x1012cm-2; this value is compatible with that
measured by XRT (Molina et al. 2009MNRAS.399.1293M 2009MNRAS.399.1293M) but the uncertainty
is now sufficiently small to consider the source as not absorbed.
g = Pair of galaxies MCG+04-48-002 (#1) and NGC 6921 (#2) where the
INTEGRAL/IBIS detection is referred to both galaxies and the 20-100keV
flux of each has been estimated.
Note (2): Hard X-ray sources from the INTEGRAL all-sky survey by
Krivonos et al. (2007, J/A+A/475/775) (see the text).
Note (3): Flag is:
* = Galactic column density measured in the source direction (see the text)
f = fixed value
Note (4): Classification of the AGN use the notation:
Sy = Seyfert galaxy (types Sy1, Sy1.2, Sy1.5, Sy1.9, Sy2)
NLS = Narrow-line Seyfert galaxy (type NLS1)
LINER = Low-Ionization Nuclear Emission Region
XBONG = X-ray Bright Optical Normal Galaxy
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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- 52 A29 --- Aut Author's name
57- 93 A37 --- Com Comments
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History:
From electronic version of the journal
(End) Patricia Vannier [CDS] 12-Apr-2013