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J/ApJ/511/612    Comparison of Radio-loud and Quiet Quasars (Goldschmidt+, 1999)

A Comparison of the Optical Properties of Radio-loud and Radio-quiet Quasars Goldschmidt P., Kukula M. J., Miller L., Dunlop J. S. <Astrophys. J. 511, 612 (1999)> =1999ApJ...511..612G
ADC_Keywords: Galaxies, radio; QSOs; Radio sources; Surveys Keywords: quasars: general - radio continuum: galaxies - surveys Abstract: We have made radio observations of 87 optically selected quasars at 5 GHz with the VLA in order to measure the radio power for these objects and hence determine how the fraction of radio-loud quasars varies with redshift and optical luminosity. The sample has been selected from the recently completed Edinburgh Quasar Survey and covers a redshift range of 0.3≤z≤1.5 and an optical absolute magnitude range of (-26.5)≤MB≤(-23.5) (h=1/2, qo=1/2). We have also matched other existing surveys with the Faint Images of the Radio Sky at Twenty Centimeters and NRAO VLA Sky Survey radio catalogs and combined these data so that the optical luminosity-redshift plane is now far better sampled than before. We have fitted a model to the probability of a quasar being radio-loud as a function of absolute magnitude and redshift, and from this model we infer the radio-loud and radio-quiet optical luminosity functions. The radio-loud optical luminosity function is featureless and flatter than the radio-quiet one. It evolves at a marginally slower rate if quasars evolve by density evolution, but the difference in the rate of evolutions of the two different classes is much less than was previously thought. File Summary:
FileName Lrecl Records Explanations
ReadMe 80 . This file table1.dat 85 91 Radio Fluxes and positions for the Edinburgh Quasars
Byte-by-byte Description of file: table1.dat
Bytes Format Units Label Explanations
1- 14 A14 --- Name Object Edinburgh Quasar Survey name 17 A1 --- n_Name [a] note on Name (1) 23- 24 I2 h RAh Right Ascension (B1950) 26- 27 I2 min RAm Right Ascension (B1950) 29- 33 F5.2 s RAs Right Ascension (B1950) 35 A1 --- DE- Sign of the Declination (B1950) 36- 37 I2 deg DEd Declination (B1950) 39- 40 I2 arcmin DEm Declination (B1950) 42- 45 F4.1 arcsec DEs Declination (B1950) 47- 50 F4.1 mag Bmag ? B band magnitude (2) 52- 56 F5.2 mag B-V ? (B-V) color (2) 58- 64 F7.3 --- z ? Redshift (2) 67 A1 --- l_S5GHz limit on 5GHz 68- 75 F8.3 mJy S5GHz 5 GHz flux density 78 A1 --- l_S8.4GHz limit on 8.4GHz 79- 85 F7.3 mJy S8.4GHz ? 8.4 GHz flux density (3)
Note (1): The quasar has already been detected by Parkes, MIT, Green Bank, Texas or Molonglo Note (2): Columns Bmag, B-V, and z are taken from Goldschmidt 1993 Note (3): The 8.4 GHz flux from Hooper et al. 1995a (1995ApJ...445...62H), 1995b (1995ApJ...473..746H)
History: From ApJ electronic edition February 2000: The redshift of EQS B1317-0033 was changed from 890.0 given in the journal to 0.890 given in SIMBAD. References: Goldschmidt, P. 1993, Ph.D. thesis, Univ. Edinburgh
(End) Greg Schwarz (AAS) 11-Feb-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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