J/ApJS/145/83 Compact radio sources at -30<Dec<0 (Winn+, 2003)
Interferometric phase calibration sources in the declination range
0° to -30°.
Winn J.N., Patnaik A.R., Wrobel J.M.
<Astrophys. J. Suppl. Ser. 145, 83 (2003)>
=2003ApJS..145...83W 2003ApJS..145...83W
ADC_Keywords: Radio sources
Keywords: astrometry - catalogs - radio continuum: general -
techniques: interferometric
Abstract:
We present a catalog of 321 compact radio sources in the declination
range 0°>δ>-30°. The positions of these sources have
been measured with a two-dimensional rms accuracy of 35milliarcseconds
using the NRAO Very Large Array. Each source has a peak flux density
>50mJy at 8.4GHz. We intend for this catalog to be used mainly for
selection of phase calibration sources for radio interferometers,
although compact radio sources have other scientific uses.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table1.dat 39 79 Phase calibration sources and their assumed positions
table2.dat 41 26 Astrometric check sources and their assumed positions
table3.dat 58 321 Catalog of compact radio sources measured at 8.4GHz
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See also:
J/ApJS/141/13 : VLBA calibrator Survey - VCS1 catalog (Beasley+, 2002)
Byte-by-byte Description of file: table1.dat
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Bytes Format Units Label Explanations
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1- 10 A10 --- [WPW2003] Source name derived from J2000 coordinates
13- 14 I2 h RAh Right ascension (J2000)
16- 17 I2 min RAm Right ascension (J2000)
19- 25 F7.4 s RAs Right ascension (J2000)
27 A1 --- DE- Declination sign (J2000)
28- 29 I2 deg DEd Declination (J2000)
31- 32 I2 arcmin DEm Declination (J2000)
34- 39 F6.3 arcsec DEs Declination (J2000)
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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- 10 A10 --- [WPW2003] Source name derived from J2000 coordinates
13- 14 I2 h RAh Right ascension (J2000)
16- 17 I2 min RAm Right ascension (J2000)
19- 26 F8.5 s RAs Right ascension (J2000)
28 A1 --- DE- Declination sign (J2000)
29- 30 I2 deg DEd Declination (J2000)
32- 33 I2 arcmin DEm Declination (J2000)
35- 41 F7.4 arcsec DEs Declination (J2000)
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Byte-by-byte Description of file: table3.dat
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Bytes Format Units Label Explanations
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1- 10 A10 --- [WPW2003] Source name derived from J2000 coordinates
12- 13 I2 h RAh Hour of Right Ascension (J2000)
15- 16 I2 min RAm Minute of Right Ascension (J2000)
18- 24 F7.4 s RAs Second of Right Ascension (J2000)
26 A1 --- DE- Sign of the Declination (J2000)
27- 28 I2 deg DEd Degree of Declination (J2000)
30- 31 I2 arcmin DEm Arcminute of Declination (J2000)
33- 38 F6.3 arcsec DEs Arcsecond of Declination (J2000)
40- 45 F6.1 mJy S8.4GHz Total flux density at 8.4GHz
47- 52 F6.1 mJy P8.4GHz Peak flux density at 8.4GHz,
in units of mJy/beam
54- 57 A4 --- Com Comment (1)
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Note (1): VCS1 indicates that the source was subsequently observed by
Beasley et al. (2002, Cat. J/ApJS/141/13) and appears in the VLBA
Calibrator Survey-1 catalog.
The positions in the VCS1 catalog generally have a much smaller
uncertainty (∼1mas), and are preferable to our positions when
selecting a phase calibrator for VLBI observations.
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History:
From electronic version of the journal
(End) Greg Schwarz [AAS], Patricia Bauer [CDS] 18-Mar-2003