TY - JOUR
T1 - The 2dF-SDSS LRG and QSO Survey
T2 - the spectroscopic QSO catalogue
AU - Croom, Scott M.
AU - Richards, Gordon T.
AU - Shanks, Tom
AU - Boyle, Brian J.
AU - Sharp, Robert G.
AU - Bland-hawthorn, Joss
AU - Bridges, Terry
AU - Brunner, Robert J.
AU - Cannon, Russell
AU - Carson, Daniel
AU - Chiu, Kuenley
AU - Colless, Matthew
AU - Couch, Warrick
AU - De Propris, Roberto
AU - Drinkwater, Michael J.
AU - Edge, Alastair
AU - Fine, Stephen
AU - Loveday, Jon
AU - Miller, Lance
AU - Myers, Adam D.
AU - Nichol, Robert C.
AU - Outram, Phil
AU - Pimbblet, Kevin
AU - Roseboom, Isaac
AU - Ross, Nicholas
AU - Schneider, Donald P.
AU - Smith, Allyn
AU - Stoughton, Chris
AU - Strauss, Michael A.
AU - Wake, David
PY - 2009
Y1 - 2009
N2 - We present the final spectroscopic QSO catalogue from the 2dF-SDSS LRG (luminous red
galaxy) 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 active galactic nuclei luminosity distribution at z2.6. 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 deg2 and contains new spectra of 16 326 objects, of which 8764 are QSOs and 7623 are newly discovered [the remainder were previously identified by the 2dF QSO Redshift Survey (2QZ) and SDSS]. The full QSO sample (including objects previously observed in the SDSS and 2QZ surveys) contains 12 702 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 detailed completeness estimates for the survey, based on modelling of QSO colours, including host-galaxy contributions. This calculation shows that at g 21.85 QSO colours are significantly affected by the presence of a host galaxy up to redshift z ∼ 1 in the SDSS ugriz bands. In particular, we see a significant reddening of the objects in g − i towards the fainter g-band magnitudes. This reddening is consistent with the QSO host galaxies being dominated by a stellar population of age at least 2–3 Gyr.
AB - We present the final spectroscopic QSO catalogue from the 2dF-SDSS LRG (luminous red
galaxy) 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 active galactic nuclei luminosity distribution at z2.6. 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 deg2 and contains new spectra of 16 326 objects, of which 8764 are QSOs and 7623 are newly discovered [the remainder were previously identified by the 2dF QSO Redshift Survey (2QZ) and SDSS]. The full QSO sample (including objects previously observed in the SDSS and 2QZ surveys) contains 12 702 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 detailed completeness estimates for the survey, based on modelling of QSO colours, including host-galaxy contributions. This calculation shows that at g 21.85 QSO colours are significantly affected by the presence of a host galaxy up to redshift z ∼ 1 in the SDSS ugriz bands. In particular, we see a significant reddening of the objects in g − i towards the fainter g-band magnitudes. This reddening is consistent with the QSO host galaxies being dominated by a stellar population of age at least 2–3 Gyr.
U2 - 10.1111/mnr.2008.392.issue-1
DO - 10.1111/mnr.2008.392.issue-1
M3 - Article
SN - 0035-8711
VL - 392
SP - 19
EP - 44
JO - Monthly Notices of the Royal Astronomical Society
JF - Monthly Notices of the Royal Astronomical Society
IS - 1
ER -