J/AJ/131/666 Double-lobed radio quasars from the SDSS (de Vries+, 2006)
Double-lobed radio quasars from the Sloan Digital Sky Survey.
de Vries W.H., Becker R.H., White R.L.
<Astron. J., 131, 666-679 (2006)>
=2006AJ....131..666D 2006AJ....131..666D
ADC_Keywords: Active gal. nuclei ; QSOs
Keywords: galaxies: active - galaxies: statistics - quasars: emission lines
Abstract:
We have combined a sample of 44,984 quasars selected from the Sloan
Digital Sky Survey (SDSS) Data Release 3 (Cat. II/259) with the
FIRST radio survey (Cat. VIII/71). Using a novel technique in which
the optical quasar position is matched to the complete radio
environment within 450", we are able to characterize the radio
morphological make-up of what is essentially an optically selected
quasar sample, regardless of whether the quasar (nucleus) itself has
been detected in the radio.
File Summary:
--------------------------------------------------------------------------------
FileName Lrecl Records Explanations
--------------------------------------------------------------------------------
ReadMe 80 . This file
table4.dat 23 417 *FR2 Quasar Sample
--------------------------------------------------------------------------------
Note on table4.dat: FR2s are double-lobed sources (Fanaroff & Riley class II
objects, 1974MNRAS.167p..31F 1974MNRAS.167p..31F)
--------------------------------------------------------------------------------
See also:
VII/243 : SDSS quasar catalog. III. (Schneider+, 2005)
VIII/71 : The FIRST Survey Catalog, Version 03Apr11 (Becker+ 2003)
Byte-by-byte Description of file: table4.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 2 I2 h RAh Hour of Right Ascension (J2000) (1)
4- 5 I2 min RAm Minute of Right Ascension (J2000) (1)
7- 11 F5.2 s RAs Second of Right Ascension (J2000) (1)
13 A1 --- DE- Sign of the Declination (J2000) (1)
14- 15 I2 deg DEd Degree of Declination (J2000) (1)
17- 18 I2 arcmin DEm Arcminute of Declination (J2000) (1)
20- 23 F4.1 arcsec DEs Arcsecond of Declination (J2000) (1)
--------------------------------------------------------------------------------
Note (1): Optical position.
--------------------------------------------------------------------------------
History:
From electronic version of the journal
(End) Greg Schwarz [AAS], Marianne Brouty [CDS] 06-Nov-2006