The 2dF-SDSS LRG and QSO Survey: The spectroscopic QSO catalogue

Scott M. Croom (1; 2); Gordon T. Richards (3); Tom Shanks (4),; Brian J. Boyle (5); Robert G. Sharp (2); Joss Bland-Hawthorn (1; 2); Terry; Bridges (2); Robert J. Brunner (6); Russell Cannon (2); Daniel Carson (7),; Kuenley Chiu (8); Matthew Colless (2); Warrick Couch (9); Roberto De Propris; (10); Michael J. Drinkwater (11); Alastair Edge (4); Stephen Fine (1); Jon; Loveday (12); Lance Miller (13); Adam D. Myers (6); Robert C. Nichol (7),; Phil Outram (4); Kevin Pimbblet (11); Isaac Roseboom (11; 12); Nicholas; Ross (4; 14); Donald P. Schneider (14); Allyn Smith (15); Chris Stoughton; (16); Michael A. Strauss (17); David Wake (4) ((1) University of Sydney; (2); Anglo-Australian Observatory; (3) Drexel; (4) Durham; (5) ATNF; (6); University of Illinois at Urbana-Champaign; (7) Portsmouth; (8) Exeter; (9); Swinburne; (10) CTIO; (11) Queensland; (12) Sussex; (13) Oxford; (14) Penn; State; (15) Wyoming; (16) FermiLab; (17) Princeton)

arXiv:0810.4955·astro-ph·February 10, 2009

The 2dF-SDSS LRG and QSO Survey: The spectroscopic QSO catalogue

Scott M. Croom (1, 2), Gordon T. Richards (3), Tom Shanks (4),, Brian J. Boyle (5), Robert G. Sharp (2), Joss Bland-Hawthorn (1, 2), Terry, Bridges (2), Robert J. Brunner (6), Russell Cannon (2), Daniel Carson (7),, Kuenley Chiu (8), Matthew Colless (2), Warrick Couch (9)

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TL;DR

This paper presents a comprehensive spectroscopic QSO catalogue from the 2SLAQ survey, detailing the sample selection, data collection, and analysis of faint AGN populations at redshifts below 2.6, including host galaxy effects.

Contribution

It provides the final QSO catalogue with detailed completeness estimates and insights into host galaxy influence on QSO colours at faint magnitudes.

Findings

01

Sample includes 8764 QSOs, with 7623 newly discovered.

02

QSO colours are significantly affected by host galaxy contributions at faint magnitudes.

03

Reddening of QSO colours suggests host galaxies are dominated by old stellar populations.

Abstract

We present the final spectroscopic QSO catalogue from the 2dF-SDSS LRG and QSO (2SLAQ) Survey. This is a deep, 18<g<21.85 (extinction corrected), sample aimed at probing in detail the faint end of the broad line AGN luminosity distribution at z<2.6. The candidate QSOs were selected from SDSS photometry and observed spectroscopically with the 2dF spectrograph on the Anglo-Australian Telescope. This sample covers an area of 191.9 deg^2 and contains new spectra of 16326 objects, of which 8764 are QSOs, and 7623 are newly discovered (the remainder were previously identified by the 2QZ and SDSS surveys). The full QSO sample (including objects previously observed in the SDSS and 2QZ surveys) contains 12702 QSOs. The new 2SLAQ spectroscopic data set also contains 2343 Galactic stars, including 362 white dwarfs, and 2924 narrow emission line galaxies with a median redshift of z=0.22. We present…

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