J/A+A/456/791 XMM-LSS field at 74 and 325MHz (Tasse+, 2006)
New results from the low-frequency counterpart of the
XMM large scale structure survey.
Tasse C., Cohen A.S., Roettgering H.J.A., Kassim N.E., Pierre M.,
Perley R., Best P., Birkinshaw M., Bremer M., Liang H.
<Astron. Astrophys., 456, 791-800 (2006)>
=2006A&A...456..791T 2006A&A...456..791T
ADC_Keywords: Radio sources ; Surveys
Keywords: techniques: interferometric - surveys - cosmology: observations -
large-scale structure of Universe - methods: data analysis -
radio continuum: general
Abstract:
The XMM Large Scale Structure survey (XMM-LSS) is an X-ray survey
aimed at studying the large scale structure of the Universe. The
XMM-LSS field is currently being followed up using observations across
a wide range of wavelengths, and in this paper we present the
observational results of a low frequency radio survey of the XMM-LSS
field using the Very Large Array at 74 and 325MHz. This survey will
map out the locations of the extragalactic radio sources relative to
the large scale structure as traced by the X-ray emission. This is of
particular interest because radio galaxies and radio loud AGN show
strong and complex interactions with their small and larger scale
environment, and different classes of radio galaxies are suggested to
lie at different places with respect to the large scale structure.
Description:
Observations we have conducted using the VLA in July 2003 in the
A-configuration (most extended) and in June 2002 in the
B-configuration.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
tablea1.dat 122 1220 The 325MHz source list
tablea2.dat 122 725 The 74MHz source list
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See also:
VIII/65 : 1.4GHz NRAO VLA Sky Survey (NVSS) (Condon+ 1998)
J/ApJ/591/640 : XMM-LSS low-frequency radio counterparts (Cohen+, 2003)
J/A+A/439/413 : XMDS/VVDS 4σ catalogue (Chiappetti+, 2005)
Byte-by-byte Description of file: tablea1.dat tablea2.dat
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Bytes Format Units Label Explanations
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1- 12 A12 --- [TCR2006] Source name (JHHMM.m+DDMM)
13 A1 --- n_[TCR2006] [*] *: Source detected at 325MHz and 74MHz
14- 15 I2 h RAh Right ascension (J2000)
17- 18 I2 min RAm Right ascension (J2000)
20- 24 F5.2 s RAs Right ascension (J2000)
26- 30 F5.2 arcsec e_RAs rms uncertainty on RA
32 A1 --- DE- Declination sign (J2000)
33- 34 I2 deg DEd Declination (J2000)
36- 37 I2 arcmin DEm Declination (J2000)
39- 43 F5.2 arcsec DEs Declination (J2000)
45- 49 F5.2 arcsec e_DEs rms uncertainty on DE
51 A1 --- Type [MCS] Source type: (S)ingle, (M)ultiple or
(C)omponent of multiple source
53- 58 F6.1 mJy Sint ?=- Integrated flux density at 325MHz
(only in tablea1)
60- 64 F5.1 mJy e_Sint ? rms uncertainty on Sint
65 A1 --- n_Sint [*] Note on Sint (1)
67- 73 F7.2 mJy Scomp Flux density (at 325MHz or 74MHz) of
individual component (2)
74- 79 F6.2 mJy e_Scomp rms uncertainty on Scomp
81 A1 --- l_amaj Limit flag on amaj (3)
82- 86 F5.1 arcsec amaj ?=- Size of major axis
88- 92 F5.2 arcsec e_amaj ? rms uncertainty on amaj
94 A1 --- l_amin Limit flag on amin (3)
95- 98 F4.1 arcsec amin ?=- Size of minor axis
100-103 F4.1 arcsec e_amin ? rms uncertainty on amin
106-110 F5.1 deg PA [-1/180]?=- Position angle (4)
112-115 F4.1 deg e_PA ? rms uncertainty on PA
117 A1 --- l_SI Limit flag on Sp+Index
118-122 F5.2 --- SI ?=- Spectral index with respect to NVSS
(VIII/65) flux density (1.4GHz) (5)
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Note (1): An asterisk (*) indicates the flux density has been calculated using
pixel based method.
Note (2): as derived through the Gaussian fitting method.
Note (3): 2σ upper limit if the source is unresolved.
Note (4): A value of -1.0 indicates that the position angle could not be
estimated.
Note (5): F(ν)∝νSI
For tablea1.dat, 325MHz sources, alpha1400325
For tablea2.dat, 74MHz sources, alpha140074
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History:
From electronic version of the journal
(End) Patricia Vannier [CDS] 07-Apr-2007