J/ApJ/533/611 1.4GHz survey in HDF region (Richards+, 2000)
The nature of radio emission from distant galaxies: the 1.4 GHz observations.
Richards E.A.
<Astrophys. J. 533, 611 (2000)>
=2000ApJ...533..611R 2000ApJ...533..611R
ADC_Keywords: Galaxies, radio ; Surveys
Keywords: cosmology: observations - galaxies: active - galaxies: evolution -
galaxies: starburst - radio continuum: galaxies - surveys
Abstract:
We have conducted a deep radio survey with the Very Large Array at
1.4GHz of a region containing the Hubble Deep Field (HDF). This
survey overlaps previous observations at 8.5GHz allowing us to
investigate the radio spectral properties of microJansky sources to
flux densities greater than 40µJy at 1.4GHz and greater than
8µJy at 8.5GHz. A total of 371 sources have been catalogued at
1.4GHz as part of a complete sample within 20 of the HDF.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table2.dat 66 371 Complete 1.4GHz Source List
table5.dat 54 75 Spectral indices for HDF radio sample
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Byte-by-byte Description of file: table2.dat
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Bytes Format Units Label Explanations
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1- 2 I2 h RAh Right ascension (J2000.0) (1)
4- 5 I2 min RAm Right ascension (J2000.0)
7- 12 F6.3 s RAs Right ascension (J2000.0)
14- 18 F5.3 s e_RAs rms uncertainty on RA
20 A1 --- DE- Declination sign (J2000.0)
21- 22 I2 deg DEd Declination (J2000.0)
24- 25 I2 arcmin DEm Declination (J2000.0)
27- 31 F5.2 arcsec DEs Declination (J2000.0)
33- 36 F4.2 arcsec e_DEs rms uncertainty on DE
38 A1 --- l_theta Limit flag on theta
39- 42 F4.1 arcsec theta ? Deconvolved (FWHM) major axis of the best
Gaussian fit to the source
44- 49 F6.1 --- S/N Signal-to-noise ratio of the detection (2)
51- 58 F8.1 uJy S1.4GHz Integrated sky flux density at 1.4GHz
60- 66 F7.1 uJy e_S1.4GHz ? rms uncertainty on S1.4GHz
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Note (1): Object identified as [R2000] JHHMMSS.sss+DDMMSS.ss in Simbad
Note (2): S/N calculated from Sp/σ, where Sp is the peak flux
density as measured in either the 2", 3.5" or 6" image and
σ equals the rms noise in that image.
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Byte-by-byte Description of file: table5.dat
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Bytes Format Units Label Explanations
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1- 3 A3 --- --- [VLA]
5- 18 A14 --- [R2000] VLA designation
([R2000] VLA JHHMMSS+DDMMSS in Simbad)
20 A1 --- l_S8.5GHz Limit flag on S8.5GHz
21- 26 F6.1 uJy S8.5GHz Integrated sky flux density at 8.5GHz
28 A1 --- l_S1.4GHz Limit flag on S1.4GHz
29- 34 F6.1 uJy S1.4GHz Integrated sky flux density at 1.4GHz
36 A1 --- l_alpha Limit flag on alpha
37- 41 F5.2 --- alpha Spectral index
43- 46 F4.2 --- e_alpha ? rms uncertainty on alpha
48 A1 --- l_theta Limit flag on theta
49- 52 F4.2 arcsec theta ? Angular size
53- 54 A2 --- Sample [hl ] Sample (h: 8.5GHz, l: 1.4GHz)
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History:
From ApJ electronic version
(End) James Marcout, Patricia Bauer [CDS] 31-Aug-2000