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J/AZh/77/407   Flat-spectrum radio sources at 0.97-21.7GHz     (Gorshkov+, 2000)

Analysis of instantaneous spectra of a complete sample of flat-spectrum radio sources. Gorshkov A.G., Konnikova V.K., Mingaliev M.G. <Astron. Zh. 77, 407 (2000)> =2000AZh....77..407G =2000ARep...44..353G
ADC_Keywords: Radio sources Abstract: The results of observations of a complete sample of flat-spectrum radio sources with spectral indices α>-0.5 are presented. The sample was selected from the Zelenchuk Survey at 3.9GHz (See Cat. VIII/49) and contains all sources with declinations 4-6 degrees, galactic latitudes |b|>10 degrees, and 3.9-GHz fluxes >200mJy. Spectra at 0.97-21.7 GHz were obtained for all 69 sample sources. The spectra were classified and a correlation between variability amplitude and spectrum shape was found. File Summary:
FileName Lrecl Records Explanations
ReadMe 80 . This file table1.dat 72 69 Flux densities of the radio sources table3.dat 67 41 Spectral parameters of sources with separated components table5.dat 45 28 Parameters of the sources whose spectra could not be separated into components
See also: VIII/49 : The Zelenchuk Surveys (Amirkhanyan+, 1989) J/AZh/72/291 : Variability at Frequencies 3.9 and 7.5 GHz (Gorshkov+, 1995) Byte-by-byte Description of file: table1.dat
Bytes Format Units Label Explanations
1- 8 A8 --- [GKM2000] Source name 11- 14 I4 mJy Flux0.97 ? Flux density at 0.97GHz 17- 18 I2 mJy e_Flux0.97 ? Mean error on Flux0.97 21- 24 I4 mJy Flux2.3 Flux density at 2.3GHz 27- 28 I2 mJy e_Flux2.3 Mean error on Flux2.3 31- 34 I4 mJy Flux3.9 Flux density at 3.9GHz 37- 38 I2 mJy e_Flux3.9 Mean error on Flux3.9 41- 44 I4 mJy Flux7.7 Flux density at 7.7GHz 47- 48 I2 mJy e_Flux7.7 Mean error on Flux7.7 51- 54 I4 mJy Flux11.1 Flux density at 11.1GHz 57- 58 I2 mJy e_Flux11.1 Mean error on Flux11.1 61- 64 I4 mJy Flux21.7 Flux density at 21.7GHz 67- 69 I3 mJy e_Flux21.7 Mean error on Flux21.7 72 I1 --- Epoch [0-5] Epoch of the observations (1)
Note (1): Epoch of the observations: 1 = August 1996 2 = May 1997 3 = August 1997 4 = November 1997 5 = January-February 1998
Byte-by-byte Description of file: table3.dat
Bytes Format Units Label Explanations
1- 8 A8 --- [GKM2000] Source name 11- 12 I2 h RAh Right ascension (1950) 14- 15 I2 min RAm Right ascension (1950) 17- 21 F5.2 s RAs Right ascension (1950) 24 A1 --- DE- Declination sign 25- 26 I2 deg DEd Declination (1950) 28- 29 I2 arcmin DEm Declination (1950) 31- 35 F5.2 arcsec DEs Declination (1950) 38 A1 --- Class [GLQ] Object Class (1) 41- 46 F6.4 --- z ? Redshift 48- 51 I4 mJy Flux Flux density at the maximum of the spectrum 54- 59 F6.3 GHz numax Frequency for the maximum of the spectrum 62- 67 F6.3 --- Sp+Index Spectral curvature (=d(logS)/d(logν))
Note (1): Type is: Q: quasar L: BL Lac object G: galaxy
Table 4: Data on peak frequencies ----------------------------------------------------------------------------- Radio sources N mean σ Observer's frame Source frame z z -------------------- ---------------------- ν(max),GHz σ ν(max),GHz σ ----------------------------------------------------------------------------- all z 18 1.62 0.89 8.5 5.8 20.0 11.0 z>1.4 9 2.33 0.65 5.8 2.0 19.0 6.3 z<1.4 9 0.91 0.34 11.2 7.0 21.0 14.0 L 3 (0.5) - 11.3 0.6 17.0 1.0 Byte-by-byte Description of file: table5.dat
Bytes Format Units Label Explanations
1- 8 A8 --- [GKM2000] Source name 11- 12 I2 h RAh Right ascension (1950) 14- 15 I2 min RAm Right ascension (1950) 17- 21 F5.2 s RAs Right ascension (1950) 24 A1 --- DE- Declination sign 25- 26 I2 deg DEd Declination (1950) 28- 29 I2 arcmin DEm Declination (1950) 31- 35 F5.2 arcsec DEs Declination (1950) 38 A1 --- Class [GLQ] Object class (1) 41- 45 F5.3 --- z ? Redshift
Note (1): Type is: Q: quasar L: BL Lac object G: galaxy

(End) Veta Avedisova [INASAN] 18-Sep-2000
The document above follows the rules of the Standard Description for Astronomical Catalogues.From this documentation it is possible to generate f77 program to load files into arrays or line by line

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