Access to Astronomical Catalogues

← Click to display the menu
J/AJ/137/42             Matched SDSS and FIRST Sample            (Rafter+, 2009)

Radio properties of low-redshift broad line active galactic nuclei. Rafter S.E., Crenshaw D.M., Wiita P.J. <Astron. J., 137, 42-52 (2009)> =2009AJ....137...42R
ADC_Keywords: Active gal. nuclei ; Galaxies, Seyfert ; Galaxies, radio Keywords: galaxies: active - galaxies: nuclei - galaxies: Seyfert - radio continuum: galaxies Abstract: The question as to whether the distribution of radio loudness in active galactic nuclei (AGNs) is actually bimodal has been discussed extensively in the literature. Furthermore, there have been claims that radio loudness depends on black hole mass (MBH) and Eddington ratio (Lbol/LEdd).We investigate these claims using the low- redshift broad line AGN sample of Greene & Ho (2007ApJ...667..131G), which consists of 8434 objects at z<0.35 from the Sloan Digital Sky Survey Fourth Data Release (SDSS DR4). We obtained radio fluxes from the Very Large Array Faint Images of the Radio Sky at Twenty-centimeters (FIRST) survey for the SDSS AGN. Out of the 8434 SDSS AGNs, 821 have corresponding observed radio fluxes in the FIRST survey. File Summary:
FileName Lrecl Records Explanations
ReadMe 80 . This file table1.dat 48 832 The Matched SDSS and FIRST Sample
See also: II/267 : The SDSS Photometric Catalog, DR 4 (Adelman-McCarthy+, 2006) VIII/71 : The FIRST Survey Catalog, Version 03Apr11 (Becker+ 2003) J/ApJ/667/131 : Mass function of active black holes (Greene+, 2007) Byte-by-byte Description of file: table1.dat
Bytes Format Units Label Explanations
1- 19 A19 --- SDSS SDSS DR4 identification (JHHMMSS.ss+DDMMSS.s) 21- 32 A12 --- Field FIRST field name 34 I1 --- Flag [0/1] Side lobe flag indication, 0=OK (1) 36- 42 F7.2 mJy F1.4 Integrated 1.4GHz radio flux density 44- 48 F5.2 [-] logR Log of radio loudness parameter
Note (1): Side lobe flag indication: 0 = Ok. 1 = Bad due to possible contamination from another nearby source.
History: From electronic version of the journal
(End) Greg Schwarz [AAS], Marianne Brouty [CDS] 19-May-2011
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

catalogue service

© UDS/CNRS

Contact