J/MNRAS/376/371 Polarisation of flat-spectrum radio sources (Jackson+, 2007)
A survey of polarization in the JVAS/CLASS flat-spectrum radio source surveys -
I. The data and catalogue production.
Jackson N., Battye R.A., Browne I.W.A., Joshi S., Muxlow T.W.B.,
Wilkinson P.N.
<Mon. Not. R. Astron. Soc., 376, 371-377 (2007)>
=2007MNRAS.376..371J 2007MNRAS.376..371J
ADC_Keywords: Radio sources ; Polarization
Keywords: techniques: polarimetric - surveys - galaxies: active -
radio continuum: general
Abstract:
We have used the very large JVAS/CLASS 8.4GHz surveys of flat-spectrum
radio sources to obtain a large, uniformly observed and calibrated,
sample of radio source polarizations. These are useful for many
investigations of the properties of radio sources and the interstellar
medium. We discuss comparisons with polarization measurements from
this survey and from other large-scale surveys of polarization in
flat-spectrum sources.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table2.dat 80 12746 Polarization angle measurements with the
automated analysis
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See also:
VIII/60 : JVAS survey of radio sources (Patnaik+ 1998)
VIII/72 : CLASS survey of radio sources (Myers+, 2003)
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) (1)
4- 5 I2 min RAm Right ascension (J2000) (1)
7- 13 F7.4 s RAs Right ascension (J2000) (1)
15 A1 --- DE- Declination sign (J2000) (1)
16- 17 I2 deg DEd Declination (J2000) (1)
19- 20 I2 arcmin DEm Declination (J2000) (1)
22- 27 F6.3 arcsec DEs [0/60] Declination (J2000) (1)
29- 35 F7.1 mJy IFlux ? Flux density (8.4GHz) for total flux in
Stokes I parameter
37- 43 F7.1 mJy e_IFlux ?=- rms uncertainty on IFlux
45- 51 F7.2 mJy QFlux ? Flux density (8.4GHz) for total flux in
Stokes Q parameter
53- 58 F6.2 mJy e_QFlux ?=- rms uncertainty on QFlux
60- 66 F7.2 mJy UFlux ? Flux density (8.4GHz) for total flux in
Stokes U parameter
68- 73 F6.2 mJy e_UFlux ?=- rms uncertainty on UFlux
76- 80 F5.1 deg PA ? Position angle (1/2tan-1(U/Q))
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Note (1): Position of the major component as derived from the CLASS analysis
(Myers et al., 2003, Cat. VIII/72).
Objects identified as GB6JHHMMSS+DDMMSS.
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Acknowledgements:
Neal Jackson, njj(at)jb.man.ac.uk
(End) Patricia Vannier [CDS] 17-Sep-2007