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J/AZh/83/241   Flux-density-complete sample of radio sources  (Gorshkov+, 2006)

Instantaneous spectra for a flux-density-complete sample of radio sources in the declination zone 74-75 deg. Gorshkov A.G., Konnikova V.K., Mingaliev M.G. <Astron. Zh. 83, 241 (2006)> =2006AZh....83..241G =2006ARep...50..210G
ADC_Keywords: Radio sources Abstract: We present the results of observations of flux-density- complete sample of radio with the RATAN-600 radio telescope at 0.97, 2.3, 3.9, 7.7, 11.1, and 21.7GHz. The sample was extracted from the GB6 catalog (VIII/40) at 4.85GHz, and contains all the sources at declination zone 74-75° (J2000) with flux densities S(4.85)>100mJy. We have obtained optical identifications for 67% of radio sources with flat spectra and 36% of those with normal spectra. Description: We carried out two sets of observations of the sample, from August 16 to September 15, 1998 and from July 5 to August 5, 2003. File Summary:
FileName Lrecl Records Explanations
ReadMe 80 . This file table1.dat 98 44 *Optical identifications and flux densities for flat-spectrum sources (27 sources) table2.dat 98 32 Identifications and flux densities for the steep-spectrum sources
Note on table1.dat: For sources observed during both runs, the first line gives data for 1998 and the second data for 2003.
See also: VIII/40 : GB6 catalog of radio sources (Gregory+ 1996) Byte-by-byte Description of file: table1.dat table2.dat
Bytes Format Units Label Explanations
1- 2 I2 h RAh Right Ascension (J2000) (hours) 4- 5 I2 min RAm Right Ascension (J2000) (minutes) 7- 12 F6.3 s RAs Right Ascension (J2000) (seconds) 15- 16 I2 deg DEd Declination (J2000) (degrees) 18- 19 I2 arcmin DEm Declination (J2000) (minutes) 21- 25 F5.2 arcsec DEs Declination (J2000) (seconds) 28- 29 A2 --- Ident Identifications (1) 32- 36 F5.3 --- z ? Redshift 38- 39 I2 --- Ref ? References for the redshift (2) 42- 46 F5.2 --- Bmag ? B magnitude 49- 52 I4 mJy S0.97 ? Flux density at 0.97 GHz 54- 56 I3 mJy e_S0.97 ? Uncertainty on S0.97 58- 61 I4 mJy S2.3 ? Flux density at 2.3 GHz 64- 65 I2 mJy e_S2.3 ? Uncertainty on S2.3 67- 70 I4 mJy S3.9 Flux density at 3.9 GHz 72- 73 I2 mJy e_S3.9 ? Uncertainty on S3.9 75- 78 I4 mJy S7.7 ? Flux density at 7.7 GHz 80- 81 I2 mJy e_S7.7 ? Uncertainty on S7.7 83- 86 I4 mJy S11.1 ? Flux density at 11.1 GHz 88- 89 I2 mJy e_S11.1 ? Uncertainty on S11.1 91- 94 I4 mJy S21.7 ? Flux density at 21.7 GHz 97- 98 I2 mJy e_S21.7 ? Uncertainty on S21.7
Note (1): Identifications as follows: Q = quasars G = galaxies EF = empty field L = BL Lac objects + = means that the source was identified but has not yet been classified. Note (2): References as follows: 16 = Veron-Cetty & Veron, 2001A&A...374...92V, Cat. VII/224 18 = Chavushyan et al., 2001ARep...45...79C 19 = Afanasiev et al., 2005, Cat. J/AZh/82/420 20 = Stickel & Kuehr, 1996, Cat. J/A+AS/115/11 -------------------------------------------------------------------------------- Table 3. Characteristics of the two samples -------------------------------------------------------------------------------- Parametres Sample S(4.85GHz)<200mJy Sample S(4.85GHz)>200mJy -------------------------------------------------------------------------------- Declination 10-12.5 deg(J2000) 74-75 deg (J2000) -------------------------------------------------------------------------------- All Steep Flat All Steep Flat -------------------------------------------------------------------------------- Number of sources 153 70 83 63 36 27 Object identified 112(73%) 41(59%) 71(86%) 31(49%) 14( 39%) 18(67%) Object classified 108(71%) 39(56%) 69(83%) 28(44%) 11( 30%) 17(63%) among them: Galaxies 34(31%) 24(62%) 10(14%) 14(50%) 11(100%) 3(18%) Quasars & BL Lac objects 74(69%) 15(38%) 59(86%) 14(50%) none 14(82%) Redshift of the galaxies 0.24(0.14) ... ... 0.25(0.19) ... ... Redshift of the quasars 1.42(0.75) ... ... 1.3(0.65) ... ... Mean spectral index ... -0.82 ... ... -0.83 ... -------------------------------------------------------------------------------- Note: All = the all sample Steep = steep-spectrum sources Flat = flat-spectrum sources

(End) Veta Avedisova (INASAN) 08-Jan-2007
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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