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J/AZh/77/3   Studies of Bright Steep-Spectrum Radio Sources   (Lipovka+, 2000)

Large studies of bright steep-Spectrum radio sources. Lipovka N.M., Lipovka A.A., Verkhodanov O.V., Chavira E. <Astron. Zh. 77, 3 (2000)> =2000AZh....77....3L =2000ARep...44....1L
ADC_Keywords: Radio sources; Photometry, UBV Abstract: Results of studies of bright radio sources in the constellation Cetus are presented. More than 50% of the sources have radio spectral indices steeper than 0.9. Optical identifications have been determined for 35 sources. A large fraction of the radio sources are identified with weak blue galaxies. Given their spectral indices, it is likely that these objects have redshift z=0.4-1.0. More than 20% of the steep-spectrum sources do not have optical identifications and appear to be weak galaxies with z>2. File Summary:
FileName Lrecl Records Explanations
ReadMe 80 . This file table.dat 122 91 List of galaxies
Byte-by-byte Description of file: table.dat
Bytes Format Units Label Explanations
1- 2 A2 --- Seq Running number [1-35] 5- 14 A10 --- Name Name of radio source 19- 20 I2 h RAh Right ascension (1950) 22- 23 I2 min RAm Right ascension (1950) 25- 30 F6.3 s RAs Right ascension (1950) 33- 37 F5.3 s e_RAs ? Standard deviation in RAs 41 A1 --- DE- Declination sign 42- 43 I2 deg DEd Declination (1950) 45- 46 I2 arcmin DEm Declination (1950) 48- 52 F5.2 arcsec DEs Declination (1950) 55- 58 F4.2 arcsec e_DEs ? Standard deviation in DEs 62- 65 I4 MHz Freq ? Observing frequency (1) 68- 73 F6.1 mJy Flux ? Radio Flux density at frequency Freq 76- 82 F7.3 mJy e_Flux ? Standard deviation in Flux 84 A1 --- l_alpha Limit flag on spectral index 85- 90 F6.3 --- alpha ? Spectral index between 365 and 1400 MHz 94 A1 --- l_Rmag ? Limit flag on mR 95- 99 F5.2 mag Rmag ? Stellar magnitude on red plates 103-107 F5.2 mag Bmag ? Stellar magnitude on blue plates 113-114 A2 --- Type ? Type of optical object (2) 118-119 A2 --- Refs References (2) 121-122 A2 --- EF [EF ] EF: empty field in ref [9] (3)
Note (1): 365MHz, 408MHz or 1400 MHz Note (2): Gb: blue galaxy; Gr: red galaxy; Q : quasar Note (3): References: 9. Irwin, 1998, http://www.ast.cam.ac.uk/~mike/apmcat/ 10. Condon et.al., 1996, The NRAO VLA Sky Survey, http://www.nrao.edu Cat. VIII/65 11. Douglas et al., 1996, Cat. VIII/42 15. Large et al., 1981, Cat. VIII/16

(End) Veta Avedisova [INASAN] 23-Aug-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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