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Related papers: The AAO 2dF QSO Redshift Survey

200 papers

DEEP is a multi-institutional program designed to undertake a major spectroscopic survey of 10,000+ field galaxies to I ~ 23 with a new instrument (DEIMOS) on the Keck II 10-m telescope. The scientific goals include exploring galaxy…

Astrophysics · Physics 2007-05-23 David C. Koo

We present a clustering analysis of QSOs over the redshift range z=0.3-2.9. We use a sample of 10558 QSOs taken from the preliminary catalogue of the 2dF QSO Redshift Survey (2QZ). The two-point redshift-space correlation function of QSOs…

Astrophysics · Physics 2009-10-31 Scott M. Croom , T. Shanks , B. J. Boyle , R. J. Smith , L. Miller , N. S. Loaring , F. Hoyle

We present a determination of the optical QSO luminosity function and its cosmological evolution with redshift for a sample of over 6000 QSOs identified primarily from the first observations of the 2dF QSO Redshift Survey (2QZ). For QSOs…

Astrophysics · Physics 2019-08-17 B. J. Boyle , T. Shanks , S. M. Croom , R. J. Smith , L. Miller , N. Loaring , C. Heymans

The dependence of the number density of the bright QSOs at different redshifts ($n_{QSO}(z)$) on initial power spectrum is studied. It is assumed that QSO phenomenon is an early short term stage of evolution of massive galaxies with $M\geq…

Astrophysics · Physics 2016-08-30 B. Novosyadlyj , Yu. Chornij

Near-infrared surveys have very promising cosmological applications. The DENIS 2 micron survey, currently in camera-testing, is scheduled to begin in early 1995, and to map the entire southern sky in the $I$, $J$, and $K'$ bands. The steps…

Astrophysics · Physics 2016-08-30 Gary A. Mamon

In the near future, the arrival of new surveys promises a significant increment in the number of quasars (QSO) at large redshift ranges. This will help to constrain the dark energy models using quasars. The Large Synoptic Survey Telescope…

High Energy Astrophysical Phenomena · Physics 2019-11-13 Swayamtrupta Panda , Bożena Czerny

Quasi-stellar objects (QSOs) whose spectral energy distributions (SEDs) are reddened by dust either in their host galaxies or in intervening absorber galaxies are to a large degree missed by optical color selection criteria like the one…

We describe the selection of galaxies targeted in eight low redshift clusters (APMCC0917, A168, A4038, EDCC442, A3880, A2399, A119 and A85; $0.029 < z < 0.058$) as part of the Sydney-AAO Multi-Object integral field Spectrograph Galaxy…

We present a clustering analysis of QSOs using over 20000 objects from the final catalogue of the 2dF QSO Redshift Survey (2QZ), measuring the z-space correlation function, xi(s). When averaged over the range 0.3<z<2.2 we find that xi(s) is…

We present progress results of a new survey for bright QSOs (V<14.5, R<15.4, B_J<15.2) covering the whole sky at |b|>30. The surface density of QSOs brighter than B_J=14.8 turns out to be $2.9 \pm 0.8 \cdot 10^{-3} deg^{-2}$. The optical…

Astrophysics · Physics 2007-05-23 S. Cristiani , A. Grazian , A. Omizzolo

The Deep Ecliptic Survey is a project whose goal is to survey a large area of the near-ecliptic region to a faint limiting magnitude (R ~ 24) in search of objects in the outer solar system. We are collecting a large homogeneous data sample…

The 2dF Galaxy Redshift Survey is the first to observe more than 100,000 redshifts. This allows precise measurements of many of the key statistics of galaxy clustering, in particular redshift-space distortions and the large-scale power…

We present the first eight months of data from our secondary target program within the ongoing Dark Energy Spectroscopic Instrument (DESI) survey. Our program uses a mid-infrared and optical colour selection to preferentially target…

We outline our recently started program to investigate the galaxy environment of QSOs, in particular of radio-quiet objects at intermediate redshifts.

Astrophysics · Physics 2007-05-23 Klaus J"ager , Klaus J. Fricke , Jochen Heidt

The abundances of groups and clusters of galaxies are expected to have changed substantially since high redshift, with the strength of this evolution dependent upon fundamental cosmological parameters. Upcoming large redshift surveys of…

Astrophysics · Physics 2009-11-07 Jeffrey A. Newman , Christian Marinoni , Alison L. Coil , Marc Davis

The 4MOST Cosmology Redshift Survey (CRS) will perform stringent cosmological tests via spectroscopic clustering measurements that will complement the best lensing, cosmic microwave background and other surveys in the southern hemisphere.…

Cosmology and Nongalactic Astrophysics · Physics 2019-04-02 J. Richard , J. -P. Kneib , C. Blake , A. Raichoor , J. Comparat , T. Shanks , J. Sorce , M. Sahlén , C. Howlett , E. Tempel , R. McMahon , M. Bilicki , B. Roukema , J. Loveday , D. Pryer , T. Buchert , C. Zhao

Near-infrared spectra of four QSOs located at $z>6$ are obtained with the OH-airglow suppressor mounted on the Subaru telescope. The FeII/MgII emission-line ratios of these QSOs are examined by the same fitting algorithm as in our previous…

Astrophysics · Physics 2009-11-10 F. Iwamuro , M. Kimura , S. Eto , T. Maihara , K. Motohara , Y. Yoshii , M. Doi

The 100,000 spectra from the 2 degree Field Galaxy Redshift Survey (2dFGRS) in the 100k Public Data Release represent the largest single compilation of galaxy spectra available. By virtue of its sheer size and the properties of the…

Astrophysics · Physics 2009-11-07 Darren S. Madgwick , Paul C. Hewett , Daniel J. Mortlock , Ofer Lahav

Large-scale surveys over the last years have revealed about 300 QSOs at redshift above 6. Follow-up observations identified surprising properties, such as the very high black hole (BH) masses, spatial correlations with surrounding cold gas…

Astrophysics of Galaxies · Physics 2021-10-20 J. Greiner , J. Bolmer , R. M. Yates , M. Habouzit , E. Banados , P. M. J. Afonso , P. Schady

It is commonly accepted that quasar redshifts have a cosmological character and that most of the quasars are at Gigaparsec distances. However, there are some cases where several quasars with completely different redshifts and a nearby…

Astrophysics · Physics 2009-11-10 Piotr Popowski , Wolfgang Weinzierl