http://adsabs.harvard.edu/abs/2010MNRAS.402.2403M The Australia Telescope 20GHz Survey (AT20G), Version XX October 2009 ================================================================================ The Australia Telescope 20GHz Survey (AT20G), Version XX October 2009. Murphy T., Sadler E. M., Ekers R. D., Massardi M., Hancock P. J., Mahony, E., Ricci R., Burke-Spolaor S., Calabretta M., Chhetri R., De Zotti G., Edwards P. G., Ekers J. A., Jackson C. A., Kesteven M. J., Lindley E., Newton-McGee K., Phillips C., Roberts P., Sault R. J., Staveley-Smith L., Subrahmanyan R., Walker M. A., Wilson W. E. Monthly Notices of the Royal Astronomical Society, Volume 402, Issue 4, pp. 2403-2423. ================================================================================ ADC_Keywords: Radio sources ; Surveys ; Radio continuum Keywords: radio continuum: general -- catalogues -- surveys -- galaxies: active -- cosmic microwave background -- methods: data analysis Description: The Australia Telescope 20GHz Survey (AT20G) is a blind radio survey carried out at 20~GHz with the Australia Telescope Compact Array (ATCA) from 2004 to 2008, and covers the whole sky south of declination 0\degr. The AT20G source catalogue presented here is an order of magnitude larger than any previous catalogue of high-frequency radio sources, and includes 5890 sources above a 20~GHz flux-density limit of 40\,mJy. All AT20G sources have total intensity and polarisation measured at 20~GHz, and most sources south of declination $-15\degr$ also have near-simultaneous flux-density measurements at 5 and 8~GHz. A total of 1559 sources were detected in polarised total intensity at one or more of the three frequencies. File Summary: -------------------------------------------------------------------------------- FileName Lrecl Records Explanations -------------------------------------------------------------------------------- ReadMe 80 . This file at20gcat.dat 140 5890 The AT20G Catalogue, Version 1.0 (2009-10-15) -------------------------------------------------------------------------------- See also: J/MNRAS/384/775/AT20G : Australia Telescope 20GHz (AT20G) Survey: Bright Source Sample (Massardi+ 2008) Byte-by-byte Description of file: at20gcat.dat -------------------------------------------------------------------------------- Bytes Format Units Label Explanations -------------------------------------------------------------------------------- 1- 19 A19 --- Name IAU designation 21- 22 I2 h RAh Right Ascension J2000 (hours) (1) 24- 25 I2 min RAm Right Ascension J2000 (minutes) 27- 31 F5.2 s RAs Right Ascension J2000 (seconds) 33 A1 --- DE- Declination J2000 (sign) (2) 34- 35 I2 deg DEd Declination J2000 (degrees) 37- 38 I2 arcmin DEm Declination J2000 (minutes) 40- 43 F4.1 arcsec DEs Declination J2000 (seconds) 45- 49 I5 mJy/bm S20 Peak brightness at 20 GHz (in mJy/beam) (3) 51- 53 I3 mJy/bm e_S20 Uncertainty on S20 55- 59 I5 mJy/bm S8 Peak brightness at 8 GHz (in mJy/beam) (3) 61- 63 I3 mJy/bm e_S8 Uncertainty on S8 65- 69 I5 mJy/bm S5 Peak brightness at 5 GHz (in mJy/beam) (3) 71- 73 I3 mJy/bm e_S5 Uncertainty on S5 75- 77 A3 --- Epoch Epoch of observation at 20,8,5 GHz (4) 79 A1 --- Quality Quality flag (g=good or p=poor) 81- 83 A3 --- Flags Other flags (5) 85- 89 I5 mJy/bm P20 Polarized flux density (or limit) at 20 GHz 91- 92 I2 mJy/bm e_P20 Uncertainty on P20 94- 98 F5.1 --- m20 Fractional polarisation at 20 GHz 100-102 I3 deg PA20 Position angle at 20 GHz 104-108 I5 mJy/bm P8 Polarized flux density (or limit) at 8 GHz 110-111 I2 mJy/bm e_P8 Uncertainty on P8 113-117 F5.1 --- m8 Fractional polarisation at 8 GHz 119-121 I3 deg PA8 Position angle at 8 GHz 123-127 I5 mJy/bm P5 Polarized flux density (or limit) at 5 GHz 129-130 I2 mJy/bm e_P5 Uncertainty on P5 132-136 F5.1 --- m5 Fractional polarisation at 5 GHz 138-140 I3 deg PA5 Position angle at 5 GHz -------------------------------------------------------------------------------- Note (1): The mean uncertainty in RA is 0.9 arcsec. See Sec 4.1 of the paper. Note (2): The mean uncertainty in Dec is 1.0 arcsec. See Sec 4.1 of the paper. Note (3): See Sec 3.3.2 for calculation of fluxes for extended sources. Note (4): The 3 digits give the epoch code for the 3 frequencies. See Table 3 of the paper for an explanation of the epoch codes. Note (5): Possible values for flags: e=extended source, h=Galactic HII region, p=Galactic planetary nebula, m=Magellanic clouds source, l=no match in low frequency surveys, b=large and extended. See the paper for more details of these classifications. -------------------------------------------------------------------------------- ================================================================================