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Large-scale clustering of Lyman-alpha emission intensity from SDSS/BOSS
Rupert A. C. Croft, Jordi Miralda-Escudé, Zheng Zheng +25
(Abridged) We detect the large-scale structure of Lya emission in the Universe at redshifts z=2-3.5 by measuring the cross-correlation of Lya surface brightness with quasars in SDS…
Hubble Space Telescope Observations of Sub-Damped Lyman-alpha Absorbers at z < 0.5, and Implications for Galaxy Chemical Evolution
Debopam Som, Varsha P. Kulkarni, Joseph Meiring +5
We report observations of four sub-damped Lyman-alpha (sub-DLA) quasar absorbers at z<0.5 obtained with the Hubble Space Telescope Cosmic Origins Spectrograph. We measure the avail…
The Cross-correlation of MgII Absorption and Galaxies in BOSS
Ignasi Pérez-Ràfols, Jordi Miralda-Escudé, Britt Lundgren +5
We present a measurement of the cross-correlation of MgII absorption and massive galaxies, using the DR11 main galaxy sample of the Baryon Oscillation Spectroscopic Survey of SDSS-…
The Sloan Digital Sky Survey quasar catalog: tenth data release
Isabelle Pâris, Patrick Petitjean, Éric Aubourg +47
We present the Data Release 10 Quasar (DR10Q) catalog from the Baryon Oscillation Spectroscopic Survey (BOSS) of the Sloan Digital Sky Survey III. The catalog includes all BOSS obj…
Galaxies with Background QSOs: II. An Automated Search for Multiple Galaxy Emission Lines
Lorrie Straka, Zakary L. Whichard, Varsha P. Kulkarni +4
We have improved upon our previous search technique of systematically searching QSO spectra for narrow galactic H-alpha emission, which indicates a foreground galaxy within the Slo…
Probing the Circumgalactic Medium at High-Redshift Using Composite BOSS Spectra of Strong Lyman-alpha Forest Absorbers
Matthew M. Pieri, Michael J. Mortonson, Stephan Frank +17
We present composite spectra constructed from a sample of 242,150 Lyman-alpha (Lya) forest absorbers at redshifts 2.4<z<3.1 identified in quasar spectra from the Baryon Oscillation…
Candidate Type II Quasars at 2 < z < 4.3 in the Sloan Digital Sky Survey III
Rachael Alexandroff, Michael A. Strauss, Jenny E. Greene +12
At low redshifts, dust-obscured quasars often have strong yet narrow permitted lines in the rest-frame optical and ultraviolet, excited by the central active nucleus, earning the d…
Narrow absorption line variability in repeat quasar observations from the Sloan Digital Sky Survey
Troy L. Hacker, Robert J. Brunner, Britt F. Lundgren +1
We present the results from a time domain study of absorption lines detected in quasar spectra with repeat observations from the Sloan Digital Sky Survey Data Release 7 (SDSS DR7).…
Element Abundances at High-redshift: Magellan MIKE Observations of sub-Damped Lyman-alpha Absorbers at 1.7 < z <2.4
Debopam Som, Varsha P. Kulkarni, Joseph Meiring +4
We present chemical abundance measurements from high-resolution observations of 5 sub-damped Lyman-alpha absorbers at 1.7 < z < 2.4 observed with the Magellan Inamori Kyocera Echel…
Probing the Extended Gaseous Regions of M31 with Quasar Absorption Lines
Sandhya Rao, Gendith Sardane, David Turnshek +4
We present HST-COS spectra of ten quasars located behind M31, selected to investigate the properties of gas associated with its extended disk and high velocity clouds (HVCs). The s…
Baryon Acoustic Oscillations in the Ly-α forest of BOSS quasars
Nicolás G. Busca, Timothée Delubac, James Rich +59
We report a detection of the baryon acoustic oscillation (BAO) feature in the three-dimensional correlation function of the transmitted flux fraction in the \Lya forest of high-red…
The SDSS-III Baryon Oscillation Spectroscopic Survey: The Quasar Luminosity Function from Data Release Nine
Nicholas P. Ross, Ian D. McGreer, Martin White +39
We present a new measurement of the optical Quasar Luminosity Function (QLF), using data from the Sloan Digital Sky Survey-III: Baryon Oscillation Spectroscopic Survey (SDSS-III: B…
The large-scale cross-correlation of Damped Lyman Alpha Systems with the Lyman Alpha Forest: First Measurements from BOSS
Andreu Font-Ribera, Jordi Miralda-Escudé, Eduard Arnau +11
We present the first measurement of the large-scale cross-correlation of Lyman alpha forest absorption and Damped Lyman alpha systems (DLA), using the 9th Data Release of the Baryo…
Stellar masses of SDSS-III BOSS galaxies at z~0.5 and constraints to galaxy formation models
Claudia Maraston, Janine Pforr, Bruno M. Henriques +27
We calculate stellar masses for massive luminous galaxies at redshift 0.2-0.7 using the first two years of data from the Baryon Oscillation Spectroscopic Survey (BOSS). Stellar mas…
The Clustering of Galaxies in the SDSS-III DR9 Baryon Oscillation Spectroscopic Survey: Testing Deviations from and General Relativity using anisotropic clustering of galaxies
Lado Samushia, Beth A. Reid, Martin White +19
We use the joint measurement of geometry and growth from anisotropic galaxy clustering in the Baryon Oscillation Spectroscopic Survey Data Release 9 CMASS sample reported by Reid e…
The Sloan Digital Sky Survey Quasar Lens Search. VI. Constraints on Dark Energy and the Evolution of Massive Galaxies
Masamune Oguri, Naohisa Inada, Michael A. Strauss +12
We present a statistical analysis of the final lens sample from the Sloan Digital Sky Survey Quasar Lens Search (SQLS). The number distribution of a complete subsample of 19 lensed…
The Sloan Digital Sky Survey Quasar Lens Search. V. Final Catalog from the Seventh Data Release
Naohisa Inada, Masamune Oguri, Min-Su Shin +13
We present the final statistical sample of lensed quasars from the Sloan Digital Sky Survey (SDSS) Quasar Lens Search (SQLS). The well-defined statistical lens sample consists of 2…
A Super-Damped Lyman-alpha QSO Absorber at z=2.2
Varsha P. Kulkarni, Joseph Meiring, Debopam Som +4
We report the discovery of a "super-damped" Lyman-alpha absorber at toward QSO Q1135-0010 in the Sloan Digital Sky Survey, and follow-up VLT UVES spectroscopy. Voi…
HST/COS Observations of Thirteen New He II Quasars
David Syphers, Scott F. Anderson, Wei Zheng +3
The full reionization of intergalactic helium was a major event in the history of the IGM, and UV observations of the He II Gunn-Peterson trough allow us to characterize the end of…
A SINFONI Integral Field Spectroscopy Survey for Galaxy Counterparts to Damped Lyman-alpha Systems - III. Three Additional Detections
Celine Peroux, Nicolas Bouche, Varsha P. Kulkarni +2
We report three additional SINFONI detections of H-alpha emission line from quasar absorbers, two of which are new identifications. These were targeted among a sample of systems wi…
Exploring the dust content of SDSS DR7 damped Lyman alpha systems at 2.155.2
Pushpa Khare, Daniel Vanden Berk, Donald G. York +2
We have studied a sample of 1084 intervening absorption systems with 2.155.2, having log(N) 20.0 in the spectra of QSOs in Sloan Digital Sky Survey (S…
He II Lyβ Gunn-Peterson Absorption: New HST Observations, and Theoretical Expectations
David Syphers, Scott F. Anderson, Wei Zheng +7
Observations of He II Lyα Gunn-Peterson troughs have proved to be a valuable probe of the epoch of helium reionization at z~3. Since this optical depth can become unmeasurably larg…
The Dark Matter Haloes and Host Galaxies of MgII Absorbers at z~1
Britt Lundgren, David Wake, Nikhil Padmanabhan +2
Strong foreground absorption features from singly-ionized Magnesium (Mg II) are commonly observed in the spectra of quasars and are presumed to probe a wide range of galactic envir…
The Lyman-alpha forest in three dimensions: measurements of large scale flux correlations from BOSS 1st-year data
Anže Slosar, Andreu Font-Ribera, Matthew M. Pieri +34
Using a sample of approximately 14,000 z>2.1 quasars observed in the first year of the Baryon Oscillation Spectroscopic Survey (BOSS), we measure the three-dimensional correlation…