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200 papers

We present estimated redshifts and derived properties for a sample of 1663 galaxies with Ks <= 22 (Vega), selected from 50.4 sq.arcmin of the GOODS/CDFS field with deep ISAAC imaging, and make an extensive comparison of their properties…

Astrophysics · Physics 2016-08-30 K. I. Caputi , J. S. Dunlop , R. J. McLure , N. D. Roche

Observed evolution of the total mass distribution with redshift is crucial to testing galaxy evolution theories. To measure the total mass distribution, strong gravitational lenses complement the resolved dynamical observations currently…

The "Cosmic Evolution Survey" (COSMOS) enables the study of the Spectral Energy Distributions (SEDs) of Active Galactic Nuclei (AGN) because of the deep coverage and rich sampling of frequencies from X-ray to radio. Here we present a SED…

We investigate the clustering properties of ~1550 broad-line active galactic nuclei (AGNs) at <z>=0.25 detected in the ROSAT All-Sky Survey (RASS) through their measured cross-correlation function with ~46,000 Luminous Red Galaxies (LRGs)…

Cosmology and Nongalactic Astrophysics · Physics 2010-03-26 Mirko Krumpe , Takamitsu Miyaji , Alison L. Coil

This is the first in a series of papers describing the {\it Optical Redshift Survey} (ORS), a redshift survey of optically selected galaxies covering 98\% of the sky above $|b| = 20^\circ$ (8.09 ster). The survey is drawn from the UGC, ESO,…

Astrophysics · Physics 2009-10-22 B. X. Santiago , M. A. Strauss , O. Lahav , M. Davis , A. Dressler , J. Huchra

Galaxy groups have been under-studied relative to their richer counterparts -- clusters. The Group Evolution Multiwavelength Study (GEMS) aims to redress some the balance. Here we describe the GEMS sample selection and resulting sample of…

The NASA/ISO Key Project on active galactic nuclei (AGN) seeks to better understand the broad-band spectral energy distributions (SEDs) of these sources from radio to X-rays, with particular emphasis on infrared properties. The ISO sample…

We use the VST-COSMOS survey to identify, via their optical broadband variability, 30 AGN in nearby (z<0.4) dwarf (10^8 MSun < M < 10^10 MSun) galaxies. VST-COSMOS offers a 1 deg^2 survey footprint, a single visit depth of 24.6 mag and 68…

Astrophysics of Galaxies · Physics 2025-11-20 S. Kaviraj , D. De Cicco , I. Lazar , B. Bichang'a , A. E. Watkins , G. Martin , S. Koudmani

We report the results of a visual inspection of images of the Rapid ASKAP Continuum Survey (RACS) in search of extended radio galaxies (ERG) that reach or exceed linear sizes on the order of one Megaparsec. We searched a contiguous area of…

Astrophysics of Galaxies · Physics 2021-11-18 Heinz Andernach , Eric F. Jiménez-Andrade , Anthony G. Willis

We provide a meta-study of the statistical and individual properties of two volume-complete sets of evolved stars in the Solar Neighbourhood: (1) 852 stars from the Nearby Evolved Stars Survey (NESS), and (2) a partially overlapping set of…

We derive oxygen abundances for two samples of Seyfert 2 (Sy2) active galactic nuclei (AGN) selected from the KPNO International Spectroscopic Survey (KISS). The two samples from KISS include 17 intermediate-redshift (0.29 < z < 0.42) Sy2s…

Astrophysics of Galaxies · Physics 2023-08-15 David J. Carr , John J. Salzer , Caryl Gronwall , Anna L. Williams

We present the first results from the Distant Radio Galaxies Optically Non-detected in the SDSS (DRaGONS) Survey. Using a novel selection technique for identifying high redshift radio galaxy (HzRG) candidates, a large sample of bright…

Astrophysics · Physics 2008-11-26 S. J. Schmidt , A. J. Connolly , A. M. Hopkins

We present the techniques used to determine redshifts and to characterize the spectra of objects in the Caltech Faint Galaxy Redshift Survey in terms of spectral classes and redshift quality classes. These are then applied to spectra from…

We characterize the environments of local accreting supermassive black holes by measuring the clustering of AGN in the Swift/BAT Spectroscopic Survey (BASS). With 548 AGN in the redshift range 0.01<z<0.1 over the full sky from the DR1…

Three galaxy redshifts surveys and their analyses are discussed. (i) The recently completed Optical Redshift Survey (ORS) includes galaxies larger than 1.9 arcmin and/or brighter than $14.5^m$. It provides redshifts for $\sim 8300 $…

Astrophysics · Physics 2007-05-23 Ofer Lahav

We present a study of the redshift evolution of the projected correlation function of 593 X-ray selected AGN with I_AB<23 and spectroscopic redshifts z<4, extracted from the 0.5-2 keV X-ray mosaic of the 2.13 deg^2 XMM-COSMOS survey. We…

We have compiled a large sample of low-redshift active galactic nuclei (AGN) identified via their emission line characteristics from the spectroscopic data of the Sloan Digital Sky Survey. Since emission lines are often contaminated by…

In this paper we present and validate the galaxy sample used for the analysis of the Baryon Acoustic Oscillation signal (BAO) in the Dark Energy Survey (DES) Y3 data. The definition is based on a colour and redshift-dependent magnitude cut…

Cosmology and Nongalactic Astrophysics · Physics 2021-11-17 A. Carnero Rosell , M. Rodriguez-Monroy , M. Crocce , J. Elvin-Poole , A. Porredon , I. Ferrero , J. Mena-Fernandez , R. Cawthon , J. De Vicente , E. Gaztanaga , A. J. Ross , E. Sanchez , I. Sevilla-Noarbe , O. Alves , F. Andrade-Oliveira , J. Asorey , S. Avila , A. Brandao-Souza , H. Camacho , K. C. Chan , A. Ferte , J. Muir , W. Riquelme , R. Rosenfeld , D. Sanchez Cid , W. G. Hartley , N. Weaverdyck , T. Abbott , M. Aguena , A. Sahar , J. Annis , E. Bertin , D. Brooks , E. Buckley-Geer , D. Burke , J. Calcino , D. Carollo , M. Carrasco Kind , J. Carretero , F. Castander , A. Choi , C. Conselice , M. Costanzi , L. da Costa , M. E. da Silva Pereira , T. Davis , S. Desai , H. T. Diehl , P. Doel , A. Drlica-Wagner , K. Eckert , S. Everett , A. Evrard , B. Flaugher , P. Fosalba , J. Frieman , J. Garcia-Bellido , D. Gerdes , T. Giannantonio , K. Glazebrook , D. Gruen , R. Gruendl , J. Gschwend , G. Gutierrez , S. Hinton , D. Hollowood , K. Honscheid , B. Hoyle , D. Huterer , D. James , A. Kim , E. Krause , K. Kuehn , O. Lahav , G. Lewis , C. Lidman , M. Lima , M. Maia , U. Malik , J. Marshall , F. Menanteau , R. Miquel , J. Mohr , A. Moller , R. Morgan , R. Ogando , A. Palmese , F. Paz-Chinchon , W. Percival , A. Pieres , A. Plazas Malagon , A. Roodman , V. Scarpine , M. Schubnell , S. Serrano , R. Sharp , E. Sheldon , M. Smith , M. Soares-Santos , E. Suchyta , M. Swanson , G. Tarle , D. Thomas , C. To , B. Tucker , D. Tucker , S. Uddin , T. N. Varga , DES Collaboration

Dwarf galaxies are ideal laboratories to study the relationship between the environment and AGN activity. However, the type of environments in which dwarf galaxies hosting AGN reside is still unclear and limited to low-redshift studies (z <…

Astrophysics of Galaxies · Physics 2022-11-09 M. Siudek , M. Mezcua , J. Krywult

We present a study of the extended radio emission in a sample of 8434 low redshift (z < 0.35) broad line active galactic nuclei (AGN) from the Sloan Digital Sky Survey (SDSS). To calculate the jet and lobe contributions to the total radio…

Cosmology and Nongalactic Astrophysics · Physics 2015-05-20 Stephen E. Rafter , D. Michael Crenshaw , Paul J. Wiita