J/A+A/451/457 X-ray properties of AGN in CDFS (Tozzi+, 2006)
X-ray spectral properties of active galactic nuclei in the
Chandra Deep Field South.
Tozzi P., Gilli R., Mainieri V., Norman C., Risaliti G., Rosati P.,
Bergeron J., Borgani S., Giacconi R., Hasinger G., Nonino M.,
Streblyanska A., Szokoly G., Wang J.X., Zheng W.
<Astron. Astrophys., 451, 457-474 (2006)>
=2006A&A...451..457T 2006A&A...451..457T
ADC_Keywords: X-ray sources ; Active gal. nuclei ; Redshifts
Keywords: X-rays: diffuse background - surveys - cosmology: observations -
X-rays: galaxies - galaxies: active
Abstract:
We present a detailed X-ray spectral analysis of the sources in the
1Ms catalog of the Chandra Deep Field South (CDFS, J/ApJS/139/369)
taking advantage of optical spectroscopy and photometric redshifts for
321 extragalactic sources out of the total sample of 347 sources. As a
default spectral model, we adopt a power law with slope Gamma with an
intrinsic redshifted absorption NH, a fixed Galactic absorption and
an unresolved Fe emission line. For 82 X-ray bright sources, we are
able to perform the X-ray spectral analysis leaving both Gamma and
NH free.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table1.dat 93 336 Best fit parameters for the whole sample of
sources in the CDFS with a measured
spectroscopic or photometric redshift
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See also:
J/ApJS/139/369 : Chandra Deep Field South. 1 Ms catalog (Giacconi+ 2002)
J/ApJS/155/271 : Chandra Deep Field-South: Optical spectroscopy (Szokoly+ 2004)
J/ApJS/155/73 : Photometric redshifts of X-ray sources in CDF-S (Zheng+ 2004)
Byte-by-byte Description of file: table1.dat
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Bytes Format Units Label Explanations
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1- 3 I3 --- [GZW2002] [1/901] Sequential number,
[GZW2002] XID NNN in Simbad
5- 9 F5.3 --- z Redshift
11- 13 F3.1 --- q_z Quality flag (1)
15- 18 F4.2 --- Gamma Spectral slope (1.8 = fixed value)
20- 23 F4.2 --- e_Gamma ? Error on Gamma (lower limit)
25- 28 F4.2 --- E_Gamma ? Error on Gamma (upper limit)
30- 35 F6.2 10+22cm-2 NH Intrinsic absorption H column density
(150.00 = fixed value)
37- 42 F6.2 10+22cm-2 e_NH ? Error on NH (lower limit)
44- 49 F6.2 10+22cm-2 E_NH ? Error on NH (upper limit)
51- 58 E8.3 10-7W L0.5-2keV Soft (0.5-2keV) luminosity
60- 67 E8.3 10-7W L2-10keV Hard (2-10keV) luminosity
69- 76 E8.3 mW/m2 F0.5-2keV Soft (0.5-2keV) band flux density
78- 85 E8.3 mW/m2 F2-10keV Hard (2-10keV) band flux density
87- 93 A7 --- XType X-type (2)
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Note (1): Quality flags with Q≥1 indicate optical spectral quality as:
Q = 1 corresponds to spectra with a single optical line identified
Q = 2 indicates secure spectra but uncertain counterpart
Q = 3 indicates secure redshift
Note (2): X-type as follows:
C-thick = sources for which the best fit is given by a PEXRAV model
(exponentially cut-off power law plus a reflection component
from neutral material, Magdziarz & Zdziardski,
1995MNRAS.273..837M 1995MNRAS.273..837M)
C-thin = sources for which the best fit model is a power law with
intrinsic absorption
Soft-C = sources whose best fit model includes a soft component with
the same slope of the main power law.
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History:
From electronic version of the journal
(End) Patricia Vannier [CDS] 12-Jan-2007