J/ApJS/179/71 VLA survey of the CDF-S I. (Kellermann+, 2008)
The VLA survey of the Chandra Deep Field-South. I. Overview and the radio data.
Kellermann K.I., Fomalont E.B., Mainieri V., Padovani P., Rosati P.,
Shaver P., Tozzi P., Miller N.
<Astrophys. J. Suppl. Ser., 179, 71-94 (2008)>
=2008ApJS..179...71K 2008ApJS..179...71K
ADC_Keywords: Radio sources ; Cross identifications ; X-ray sources
Keywords: galaxies: active - galaxies: starburst - radio continuum: galaxies
X-rays: galaxies
Abstract:
We report 20 and 6cm VLA deep observations of the CDF-S including the
Extended CDF-S. We discuss the radio properties of 266 cataloged radio
sources, of which 198 are above a 20cm completeness level reaching
down to 43uJy at the center of the field. Survey observations made
at 6cm over a more limited region cover the original CDF-S to a
comparable level of sensitivity as the 20cm observations. Of 266
cataloged radio sources, 52 have X-ray counterparts in the CDF-S and a
further 37 have counterparts in the E-CDF-S area not covered by the 1Ms
exposure. Using a wide range of material, we have found optical or
infrared counterparts for 254 radio sources, of which 186 have either
spectroscopic or photometric redshifts. Three radio sources have no
apparent counterpart at any other wavelength. Measurements of the 20cm
radio flux density at the position of each CDF-S X-ray source
detected a further 30 radio sources above a conservative 3σ
detection limit. X-ray and submillimeter observations have been
traditionally used as a measure of AGN and star formation activity,
respectively. These new observations probe the faint end of both the
star formation and radio galaxy/AGN population, as well as the
connection between the formation and evolution of stars and SMBHs.
Description:
We observed the CDF-S for 50hr at 20cm primarily in the BnA
configuration in 1999 October and 2001 February, and for 32hr
at 6cm primarily in the C and CnB configurations between
2001 June and October.
File Summary:
--------------------------------------------------------------------------------
FileName Lrecl Records Explanations
--------------------------------------------------------------------------------
ReadMe 80 . This file
table1.dat 136 319 CDF-S Radio Source Catalog
--------------------------------------------------------------------------------
See also:
J/ApJS/139/369 : Chandra Deep Field South. 1 Ms catalog (Giacconi+, 2002)
J/ApJS/161/21 : Extended Chandra Deep Field-South survey (Lehmer+, 2005)
J/AJ/132/2409 : Deep ATLAS radio observations of CDFS (Norris+, 2006)
J/AJ/131/1216 : Faint radio sources in the CDF-S ACS field (Afonso+, 2006)
J/ApJ/179/114 : VLA 1.4GHz survey of E-CDF-S (Miller+, 2008)
Byte-by-byte Description of file: table1.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 16 A16 --- [KFM2008] Source identification (JHHMMSS.s+DDMMSS) (1)
18 A1 --- n_[KFM2008] [N] source in the complete 20cm cat? (2)
20- 23 A4 --- Seq Source running number (3)
25- 26 I2 h RAh Hour of Right Ascension (J2000) (4)
28- 29 I2 min RAm Minute of Right Ascension (J2000) (4)
31- 35 F5.2 s RAs Second of Right Ascension (J2000) (4)
37- 40 F4.2 s e_RAs RMS error in RAs (4)
42 A1 --- DE- Sign of the Declination (J2000) (4)
43- 44 I2 deg DEd Degree of Declination (J2000) (4)
46- 47 I2 arcmin DEm Arcminute of Declination (J2000) (4)
49- 52 F4.1 arcsec DEs Arcsecond of Declination (J2000) (4)
54- 56 F3.1 arcsec e_DEs RMS error in DEs (4)
58- 63 F6.1 --- SNR Signal-to-Noise Ratio of 1.4GHz image
65- 69 I5 uJy S1.4 The 1.4GHz (20cm) flux density
71- 74 I4 uJy e_S1.4 RMS error in S1.4
76 A1 --- l_theta Limit flag on theta
77- 80 F4.1 arcsec theta ? Overall 1.4GHz image angular size
82- 86 I5 uJy S4.8 ? The 4.8GHz (6cm) flux density (5)
88- 90 I3 uJy e_S4.8 ? RMS error in S4.8
92- 95 F4.1 --- alpha ? Spectral index between 4.8 and 1.4GHz (6)
97- 99 F3.1 --- e_alpha ? RMS error in alpha
101-104 F4.2 --- z ? Redshift of most likely optical
counterpart (7)
106-110 F5.2 mag Rmag ? R band magnitude of most likely
optical counterpart (8)
112 A1 --- n_XID [E] source taken from E-CDF-S data (9)
113-115 I3 --- XID ? Chandra ID number (9)
117-124 F8.2 [mW/m2] logSX ? Log of Chandra full 0.5-10keV band flux (8)
126-130 F5.2 [10-7W] logLX ? Log of Chandra full 0.5-10keV band
luminosity
132-136 F5.2 [W/Hz] logR ? Log of 1.4GHz rest frame radio
luminosity (10)
--------------------------------------------------------------------------------
Note (1): Following the IAU definition.
Note (2): N = source is not in the complete 20cm catalog as defined in the text.
Note (3): [KFM2008] RID NNNA in Simbad. Some sources have multiple
components. Their entries are followed by an entry for each of the
individual components denoted by capital letters. For these sources
the position given is that of the "core" component associated with an
optical counterpart or in a few cases where there is no observed
"core," which we believe should be identified with the "core."
Note (4): From the 1.4GHz data.
Note (5): In addition to those sources selected as having a peak flux
density greater than 5 time the rms noise, we have also measured the
6cm flux density at the position of each of the cataloged 20cm sources.
Note (6): Defined by S∝ν{-alpha}.
Note (7): Where available, we give spectroscopic redshifts; otherwise we
show photometric values. See Paper II (2008ApJS..179...95M 2008ApJS..179...95M).
Note (8): In the case of multicomponent sources, where possible, we show
the value with the associated radio component.
Note (9): Taken from Giacconi et al. (2002, Cat. J/ApJS/139/369,
[GZW2002] XID NNN in Simbad) or from the E-CDF-S data of Lehmer et al.
(2005, Cat. J/ApJS/161/21, [LBA2005] NNN in Simbad). Sources from
the E-CDF-S have the prefix E in column n_XID. In the case of
multicomponent sources, where possible, we show the X-ID with the
associated radio component.
Note (10): K-corrections were applied based on the spectral index, if
available, as given in the "alpha" column; otherwise assuming a
value of 0.7 for "alpha".
--------------------------------------------------------------------------------
History:
From electronic version of the journal
References:
Mainieri et al., Paper II. 2008ApJS..179...95M 2008ApJS..179...95M Cat. J/ApJS/179/95
Tozzi et al., Paper III. 2009ApJ...698..740T 2009ApJ...698..740T Cat. J/ApJ/698/740
(End) Greg Schwarz [AAS], Emmanuelle Perret [CDS] 06-Aug-2009