A Combined EIS-NVSS Survey Of Radio Sources (CENSORS) -: III.: Spectroscopic observations

被引:54
作者
Brookes, M. H. [1 ,2 ]
Best, P. N. [1 ]
Peacock, J. A. [1 ]
Rottgering, H. J. A. [3 ]
Dunlop, J. S. [1 ]
机构
[1] Univ Edinburgh, Inst Astron, SUPA, Edinburgh EH9 3HJ, Midlothian, Scotland
[2] Jet Prop Lab, Pasadena, CA 91101 USA
[3] Sterrewacht Leiden, NL-2300 RA Leiden, Netherlands
关键词
surveys; galaxies : active; galaxies : luminosity function; mass function; radio continuum : galaxies;
D O I
10.1111/j.1365-2966.2008.12786.x
中图分类号
P1 [天文学];
学科分类号
0704 ;
摘要
The Combined EIS-NVSS Survey Of Radio Sources (CENSORS) is a 1.4-GHz radio survey selected from the NRAO VLA Sky Survey (NVSS) and complete to a flux density of 7.2 mJy. It targets the ESO Imaging Survey (EIS) Patch D, which is a 3 x 2-deg(2) field centred on 09(h)51(m)36(s).0-21 degrees 00'00 '' (J2000). This paper presents the results of spectroscopic observations of 143 of the 150 CENSORS sources. The primary motivation for these observations is to achieve sufficient spectroscopic completeness so that the sample may be used to investigate the evolution of radio sources. The observations result in secure spectroscopic redshifts for 63 per cent of the sample and likely redshifts (based on a single emission line, for example) for a further 8 per cent. Following the identification of the quasars and star-forming galaxies in the CENSORS sample, estimated redshifts are calculated for the remainder of the sample via the K - z relation for radio galaxies. Comparison of the redshift distribution of the CENSORS radio sources to distributions predicted by the various radio luminosity function evolution models of Dunlop & Peacock, results in no good match. This demonstrates that this sample can be used to expand upon previous work in that field.
引用
收藏
页码:1297 / 1326
页数:30
相关论文
共 42 条
[31]   A SOUTHERN SKY SURVEY OF THE PECULIAR VELOCITIES OF 1355 SPIRAL GALAXIES [J].
MATHEWSON, DS ;
FORD, VL ;
BUCHHORN, M .
ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES, 1992, 81 (02) :413-659
[32]   Parameters of 2447 southern spiral galaxies for use in the Tully-Fisher relation [J].
Mathewson, DS ;
Ford, VL .
ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES, 1996, 107 (01) :97-102
[33]   Radio sources in the 2dF Galaxy Redshift Survey - II. Local radio luminosity functions for AGN and star-forming galaxies at 1.4 GHz [J].
Sadler, EM ;
Jackson, CA ;
Cannon, RD ;
McIntyre, VJ ;
Murphy, T ;
Bland-Hawthorn, J ;
Bridges, T ;
Cole, S ;
Colless, M ;
Collins, C ;
Couch, W ;
Dalton, G ;
De Propris, R ;
Driver, SP ;
Efstathiou, G ;
Ellis, RS ;
Frenk, CS ;
Glazebrook, K ;
Lahav, O ;
Lewis, I ;
Lumsden, S ;
Maddox, S ;
Madgwick, D ;
Norberg, P ;
Peacock, JA ;
Peterson, BA ;
Sutherland, W ;
Taylor, K .
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 2002, 329 (01) :227-245
[34]   Radio observations of the 13h XMM-Newton/ROSAT deep X-ray survey area [J].
Seymour, N ;
McHardy, IM ;
Gunn, KF .
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 2004, 352 (01) :131-141
[35]   Decrease in the space density of quasars at high redshift [J].
Shaver, PA ;
Wall, JV ;
Kellermann, KI ;
Jackson, CA ;
Hawkins, MRS .
NATURE, 1996, 384 (6608) :439-441
[36]   Modelling feedback from stars and black holes in galaxy mergers [J].
Springel, V ;
Di Matteo, T ;
Hernquist, L .
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 2005, 361 (03) :776-794
[37]  
VANOJIK R, 1994, ASTRON ASTROPHYS, V289, P54
[38]   The LBDS Hercules sample of mJy radio sources at 1.4 GHz - II. Redshift distribution, radio luminosity function, and the high-redshift cut-off [J].
Waddington, I ;
Dunlop, JS ;
Peacock, JA ;
Windhorst, RA .
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 2001, 328 (03) :882-896
[39]   The Parkes quarter-Jansky flat-spectrum sample - III. Space density and evolution of QSOs [J].
Wall, JV ;
Jackson, CA ;
Shaver, PA ;
Hook, IM ;
Kellermann, KI .
ASTRONOMY & ASTROPHYSICS, 2005, 434 (01) :133-148
[40]   The emission line-radio correlation for radio sources using the 7C Redshift Survey [J].
Willott, CJ ;
Rawlings, S ;
Blundell, KM ;
Lacy, M .
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 1999, 309 (04) :1017-1033