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PKS 0405-385 flux-density monitoring
The quasar PKS 0405-385 is one of three radio sources (the other two are PKS 1257-326 and J1819+385) which exhibit unusually strong and rapid interstellar scintillations at GHz... -
Redshift survey in 15 quasar fields
We investigate the relative distribution of the gaseous contents of the Universe (as traced by a sample of Ly{alpha} absorbers), and the luminous baryonic matter (as traced by a... -
b_j_ur photometry and redshifts of QSOs
The quasar sample selected by cross-correlating the Faint Images of the Radio Sky at Twenty cm (FIRST, ) survey and the 2-degree Field Quasar Redshift Survey (2QZ, ) allows us... -
QSO-candidates in OGLE-II Galactic bulge fields
We present 97 QSO candidates in 48 Galactic bulge fields of the Optical Gravitational Lensing Experiment II (OGLE-II) covering ~11deg^2^, which are selected via their... -
SDSS DR2 QSO and DLA properties
We use Sloan Digital Sky Survey (SDSS) Data Release 2 quasi-stellar object (QSO) spectra to constrain the dust-reddening caused by intervening damped Lyman {alpha} systems... -
MgII absorbers in SDSS QSOs
We study the cross-correlation between 212 Mg II quasar absorption systems and ~20000 luminous red galaxies (LRGs) selected from the Sloan Digital Sky Survey Data Release 1... -
XMM-Newton/2dF survey. IV.
We present an analysis of the X-ray spectral properties of 61 hard X-ray (2-8keV) selected sources from the bright XMM-Newton/2dF (f(2-8keV)>10^-14^erg/cm^2^/s) survey. This... -
Blazars equivalent widths and radio luminosity
Blazars are currently separated into BL Lacertae objects (BL Lacs) and flat spectrum radio quasars based on the strength of their emission lines. This is performed rather... -
The CLASS blazar survey. III.
We discuss the properties of the sources in the CLASS blazar survey, which aims at the selection of low radio power (P_5GHz_<10^25^W/Hz) blazars. We use Very Large Array... -
Radio-loud QSOs at z~4
We obtained spectra of 60 red, star-like objects (m_E_<18.8) identified with FIRST radio sources, S_1.4GHz_>1mJy. Eight are quasi-stellar objects (QSOs) with redshift... -
Redshifts of damped Lyman{alpha} absorbers
We present a study of the evolution of the column density distribution, f(N,z), and total neutral hydrogen mass in high column density quasar absorbers using candidates from a... -
Variability of the fine-structure constant
We have previously presented evidence for a varying fine-structure constant, {alpha}, in two independent samples of Keck/HIRES quasi-stellar object (QSO) absorption spectra.... -
BeppoSAX HELLAS survey. VI.
We present results of a complete radio follow-up obtained with the VLA and ATCA radio telescopes down to a 6-cm flux limit of about 0.3 mJy (3{sigma}) of all the 147 X-ray... -
u_j_br photometry and redshifts of QSOs
We present a detailed analysis of a sample of radio-detected quasars, obtained by matching together objects from the FIRST () survey and the 2dF Quasar Redshift Survey (2dF, ).... -
The CLASS blazar survey. II.
This paper presents the optical properties of the objects selected in the CLASS blazar survey. Because an optical spectrum is now available for 70 per cent of the 325 sources... -
The CLASS blazar survey. I.
This paper presents a new complete and well-defined sample of flat-spectrum radio sources (FSRS) selected from the Cosmic Lens All-Sky Survey (CLASS), with the further... -
Deep X-Ray Radio Blazar Survey (DXRBS). II.
We have searched the archived, pointed ROSAT Position Sensitive Proportional Counter data for blazars by correlating the WGACAT X-ray data base with several publicly available... -
QSOs redshifts and spectra in ESO/SERC field 927
We present the spectra and redshifts of 62 quasars, from observations made with the Cerro Tololo Inter-American Observatory (CTIO) 4-m Blanco Telescope. These quasars form part... -
Quasars from 7C survey
We describe the selection of candidate radio-loud quasars obtained by cross-matching radio source positions from the low-frequency (151-MHz) 7C survey with optical positions... -
The 2dF QSO Redshift Survey. VIII
We examine the highest signal-to-noise ratio spectra from the 2dF QSO Redshift Survey (2QZ) 10k release (Cat. ) and identify over 100 new low-ionization heavy-element absorbers:...
