1,286 datasets found

Keywords: quasars

Filter Results
  • NIR and MIR photometry of known z>=5 quasars

    We assemble a catalogue of 488 spectroscopically confirmed very high (z>=5.00) redshift quasars (VHzQ) and report their near- (ZYJHK_s_/K) and mid- (WISE W1234) infrared...
  • Circumgalactic medium of galaxies at z~4-5

    We present a study of the galaxy environment of nine strong HI+CIV absorption line systems (16.2<log(N(HI))<21.2) spanning a wide range in metallicity at z~4-5, using MUSE...
  • GALEX EUV quasar colours of SDSS QSOs DR14

    The rest-frame far to extreme ultraviolet (UV) colour-redshift relationship has been constructed from data on over 480,000 quasars carefully cross-matched between SDSS Data...
  • Chandra observations of 2106 radio-quiet QSOs

    We present Chandra observations of 2106 radio-quiet quasars in the redshift range 1.7<=z<=2.7 from the Sloan Digital Sky Survey (SDSS), through data release fourteen...
  • Changing-state quasars with CRTS

    We present the results of a systematic search for quasars in the Catalina Real-time Transient Survey exhibiting both strong photometric variability and spectroscopic variability...
  • MAGG I Near pristine gas cloud at z~3.5

    We present the design, methods, and first results of the MUSE Analysis of Gas around Galaxies (MAGG) survey, a large programme on the Multi-Unit Spectroscopic Explorer (MUSE)...
  • The Southern Stellar Stream Sp. Survey (S^5^)

    We introduce the Southern Stellar Stream Spectroscopy Survey (S^5^), an on-going program to map the kinematics and chemistry of stellar streams in the southern hemisphere. The...
  • Quasar winds and narrow absorption lines

    We use the spectra of 73 quasars (1.5=<z=<5) from the VLT UVES archive to catalogue and study narrow absorption lines (NALs) that are physically associated with (intrinsic...
  • Sub-damped Ly{alpha} systems in XQ-100 survey

    Sub-damped Lyman {alpha} systems (subDLAs; HI column densities of 19.0<=logN(HI)<20.3) are rarely included in the cosmic HI census performed at redshifts z_abs_>=1.5,...
  • Calibration of the virial factor f in SMBHs

    Using a compiled sample of 34 broad-line active galactic nuclei (AGNs) with measured H{beta} time lags from the reverberation mapping (RM) method and measured bulge stellar...
  • AGN UV luminosity function

    We present lists of more than 80000 mostly UV-optical colour-selected AGN from 12 data sets, homogenised with respect to the assumed cosmology, magnitude system, and bandpass...
  • Broad-line velocity shifts in 1.5<z<7.5 quasars

    We present the results of a model-independent investigation of the rest-frame UV spectra from a comprehensive sample of 394 quasars in the redshift range 1.5=<z=<7.5. We...
  • Gravitationally lensed quasars in Pan-STARRS1

    We present results of a systematic search for gravitationally lensed quasars in Pan-STARRS1. Our final sample of candidates comprises of 91 systems, not including 25...
  • Quasar Sightline and Galaxy Evolution Survey I

    We present the first results from a study of OVI absorption around galaxies at z<1.44 using data from a near-infrared grism spectroscopic Hubble Space Telescope Large...
  • Radio jets associated with galactic outflows

    We present 1-7GHz high-resolution radio imaging (VLA and e-MERLIN) and spatially resolved ionized gas kinematics for 10 z<0.2 type 2 'obscured' quasars...
  • List of 22 MEGAFLOW fields

    We use the MusE GAs FLOw and Wind (MEGAFLOW) survey to study the kinematics of extended disc-like structures of cold gas around z=~1 star-forming galaxies. The combination of...
  • Host galaxies of luminous type 2 AGNs

    We study the morphological and structural properties of the host galaxies associated with 57 optically selected luminous type 2 active galactic nuclei (AGNs) at z~0.3-0.4: 16...
  • Interplanetary scintillation studies with MWA

    Around 10 per cent of bright low-frequency radio sources observed with the Murchison Wide-field Array (MWA) show strong interplanetary scintillation (IPS) on time-scales of a...
  • UVES Spectral Quasar Absorption Database DR1

    We present the first data release (DR1) of the UVES Spectral Quasar Absorption Database (SQUAD), comprising 467 fully reduced, continuum-fitted high-resolution quasar spectra...
  • Metals, depletion, and dimming: decrypting dust

    Dust plays a pivotal role in the chemical enrichment of the interstellar medium. In the era of mid-/high-resolution spectra and multiband spectral energy distributions, testing...
You can also access this registry using the API (see API Docs).