J/MNRAS/420/2190 ECDFS sources with radio counterparts (Vattakunnel+, 2012)
The radio-X-ray relation as a star formation indicator: results from the
Very Large Array-Extended Chandra Deep Field-South.
Vattakunnel S., Tozzi P., Matteucci F., Padovani P., Miller N., Bonzini M.,
Mainieri V., Paolillo M., Vincoletto L., Brandt W.N., Luo B.,
Kellermann K.I., Xue Y.Q.
<Mon. Not. R. Astron. Soc., 420, 2190-2208 (2012)>
=2012MNRAS.420.2190V 2012MNRAS.420.2190V
ADC_Keywords: X-ray sources ; Radio sources ; Surveys
Keywords: galaxies: active - galaxies: star formation -
cosmology: observations - X-rays: galaxies
Abstract:
In order to trace the instantaneous star formation rate (SFR) at high
redshift, and thus help in understanding the relation between the
different emission mechanisms related to star formation, we combine
the recent 4-Ms Chandra X-ray data and the deep Very Large Array radio
data in the Extended Chandra Deep Field-South region. We find 268
sources detected both in the X-ray and radio bands. The availability
of redshifts for ∼95 per cent of the sources in our sample allows us
to derive reliable luminosity estimates and the intrinsic properties
from X-ray analysis for the majority of the objects.
Description:
In the E-CDF-S area, we have two sets of X-ray data obtained with
Chandra. The most important is a 4-Ms exposure observation resulting
from the co-addition of 54 individual Chandra ACIS-I exposures from
1999 October to 2010 July, with centres spaced within a few arcseconds
from RA=03:32:28.80, DE=-27:48:23 (J2000).
We consider the data from the new VLA programme which provides deep,
high-resolution 1.4-GHz imaging across the full E-CDF-S, consisting of
a six-pointing mosaic of 240 h spanning 48 d of individual 5-h
observations (Miller et al., 2008, Cat. J/ApJS/179/114).
The E-CDF-S area has been targeted by a large number of spectroscopic
surveys. For the X-ray sources, we use the spectroscopic redshift
published in Xue et al. (2011, Cat. J/ApJS/195/10).
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table2.dat 75 152 X-ray spectral analysis results of sources with
radio counterparts in the CDF-S area
table3.dat 75 116 X-ray spectral analysis of sources with radio
counterparts in the E-CDF-S complementary area
covered by the E-CDF-S
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See also:
J/ApJS/179/114 : VLA 1.4GHz survey of E-CDF-S (Miller+, 2008)
J/ApJS/195/10 : The CDF-S survey: 4Ms source catalogs (Xue+, 2011)
Byte-by-byte Description of file: table2.dat table3.dat
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Bytes Format Units Label Explanations
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1- 3 I3 --- ID Identification number from Xue et al. (table2)
or Lehmer et al. (table3) (1)
5- 8 F4.2 --- z z is the spectroscopic or photometric redshift
10- 12 F3.1 --- Gamma Slope of the intrinsic X-ray emission modelled
with a power law Γ
14- 16 F3.1 --- e_Gamma ? rms uncertainty on Gamma
18 A1 --- l_NH Limit flag on NH
19- 24 F6.2 10+22cm-2 NH Hydrogen column density
26- 31 F6.2 10+22cm-2 E_NH ? Error on NH (upper value)
33- 38 F6.2 10+22cm-2 e_NH ? Error on NH (lower value)
41- 48 E8.3 10-7W L0.5-2 Luminosity in the soft (0.5-2keV) X-ray band
50- 57 E8.3 10-7W e_L0.5-2 rms uncertainty on L0.5-2
59- 66 E8.3 10-7W L2-10 Luminosity in the hard (2-10keV) X-ray band
68- 75 E8.3 10-7W e_L2-10 rms uncertainty on L2-10
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Note (1): Identification from
* Xue et al. (2011, Cat. J/ApJS/195/10, <[XLB2011] JHHMMSS.ss+DDMMSS.s>
in Simbad) for CDF-S field (table2)
* Lehmer et al. (2005, Cat. J/ApJS/161/21, <[LBA2005] NNN> in Simbad)
for Extended CDF-S field (table3).
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History:
From electronic version of the journal
(End) Patricia Vannier [CDS] 22-Sep-2012