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Spectroscopic follow-up of the QUBRICS quasars
We present the results of the spectroscopic follow-up of the QUasars as BRIght beacons for Cosmology in the Southern Hemisphere (QUBRICS; Calderone+ 2019, J/ApJ/887/268) survey.... -
SDSS QSO DR14 spectral properties
We present measurements of the spectral properties for a total of 526,265 quasars, out of which 63% have a continuum signal-to-noise ratio >3pixel^-1^, selected from the... -
HST/COS obs. of QSO outflows in 500-1050{AA}. VII.
From Hubble Space Telescope/Cosmic Origins Spectrograph spectra of five quasars, 16 outflows are detected. For 11 outflows, we are able to constrain their distances to the... -
9-yr of Fermi-LAT & Swift obs. of 3C 454.3 flares
3C 454.3 is frequently observed in the flaring state. The long-term light curve of this source has been analyzed with 9yr (2008 August - 2017 July) of data from the Fermi-LAT... -
Compact bright radio-loud AGNs. III. VLBA 43GHz
We present the results from the 43GHz Very Long Baseline Array (VLBA) observations of 124 compact radio-loud active galactic nuclei (AGNs) that were conducted between 2014... -
9yr R-band photopolarimetric data of 3C 279
An exhaustive analysis of 9yr optical R-band photopolarimetric data of the flat-spectrum radio quasar 3C 279 from 2008 February 27 to 2017 May 25 is presented, along with... -
X-shaped radio galaxies from FIRST
We present a catalog of 290 "winged" or X-shaped radio galaxies (XRGs) extracted from the latest (2014 December 17) data release of the "Very Large Array Faint Images of the... -
QSO properties from SDSS. II. The first two years
This work aims to measure the properties of continuum and emission lines around CIV, MgII, H{beta}, and H{alpha} for the quasars observed by the extended Baryon Oscillation... -
The ELQS in the PS1 footprint (PS-ELQS)
We present the results of the Extremely Luminous Quasar Survey in the 3{pi} survey of the Panoramic Survey Telescope and Rapid Response System (Pan-STARRS; PS1). This effort... -
The CASBaH galaxy redshift survey
We describe the survey for galaxies in the fields surrounding nine sightlines to far-UV bright, z~1 quasars that define the COS Absorption Survey of Baryon Harbors (CASBaH)... -
SiIV and NV absorption line SDSS quasar systems
Using the quasar spectra from the Sloan Digital Sky Survey and with variable C IV absorption line systems, we measure the Si IV and N V absorption line systems. We obtain 50... -
MgII-BAL quasar variability in SDSS spectra
We present absorption variability results for 134 bona fide MgII broad absorption-line (BAL) quasars at 0.46<=z<=2.3 covering days to ~10yr in the rest frame. We use... -
The SDSS Reverberation Mapping (SDSS-RM) project
We present a detailed characterization of the 849 broad-line quasars from the Sloan Digital Sky Survey Reverberation Mapping (SDSS-RM) project. Our quasar sample covers a... -
LAMOST Quasar Survey: Data Releases 4 and 5
We present Data Releases 4 and 5 of the quasar catalog from the quasar survey by the Large Sky Area Multi-object Fiber Spectroscopic Telescope (LAMOST), which includes quasars... -
CIV NAL systems from SDSS-DR14 quasar spectra
Using the quasar spectra from the Sloan Digital Sky Survey, all with two-epoch to six-epoch observations, we search for CIV{lambda}{lambda}1548,1551 narrow absorption doublets... -
CLAMATO DR1: 3D Ly{alpha} forest tomography
Faint star-forming galaxies at z~2-3 can be used as alternative background sources to probe the Ly{alpha} forest in addition to quasars, yielding high sightline densities that... -
6-yr light curves of 10 blazars
We carried out multi-color optical monitoring of a sample of 10 blazars from 2005 to 2011. The sample contains 3 LBLs, 2 IBLs, 4 HBLs, and 1 FSRQ. Our monitoring focused on the... -
CIV narrow absorption line systems in SDSS-DR14
We assemble 207 variable quasars from the Sloan Digital Sky Survey, all with at least 3 observations, to analyze CIV narrow absorption doublets, and obtain 328 CIV narrow... -
Absorption features in SDSS. I. MgII abs. doublets
Using the SDSS spectra of quasars included in the DR7Q or DR12Q catalogs, we search for MgII{lambda}{lambda}2796,2803 narrow absorption doublets in the spectra data around... -
H{alpha} & H{beta} spectral regions of low-z QSOs
Using the quasars with z_em_<0.9 from the Baryon Oscillation Spectroscopic Survey, we measure the spectral characteristics, including continuum and emission lines, around the...
