105 citations
- University of ChicagoUS12 papers
- University of South CarolinaUS10 papers
- Fermi National Accelerator LaboratoryUS9 papers
- University of LouisvilleUS7 papers
- European Southern ObservatoryCL5 papers
- Centre National de la Recherche ScientifiqueFR4 papers
- Columbia UniversityUS4 papers
- Laboratoire d’Astrophysique de MarseilleFR3 papers
- Trieste Astronomical ObservatoryIT3 papers
- Institut d'Astrophysique de ParisFR2 papers
- Johns Hopkins UniversityUS2 papers
- Northwestern UniversityUS2 papers
6 papers · 2 filters
Detecting cold gas at intermediate redshifts: GMRT survey using Mg II systems
Neeraj Gupta, R. Srianand, P. Petitjean +3
Intervening HI 21-cm absorption systems at z > 1.0 are very rare and only 4 confirmed detections have been reported in the literature. Despite their scarcity, they provide interest…
The nature of damped Lyman alpha and sub-damped Lyman alpha absorbers
Pushpa Khare, Varsha P. Kulkarni, Celine Peroux +3
We present arguments based on the measured abundances in individual damped Lyman alpha systems (DLAs) and sub-damped Lyman alpha systems (sub-DLAs), and also the average abundances…
The Role of Sub-damped Lyman-alpha Absorbers in the Cosmic Evolution of Metals
V. P. Kulkarni, P. Khare, C. Peroux +3
Observations of low mean metallicity of damped Lyman-alpha (DLA) quasar absorbers at all redshifts studied appear to contradict the predictions for the global mean interstellar met…
Metal-rich Damped/sub-Damped Lyman-alpha Quasar Absorbers at z<1
C. Peroux, J. D. Meiring, V. P. Kulkarni +5
Damped Lyman-alpha absorbers (DLAs), seen in absorption against a background quasar, provide the most detailed probes available of element abundances in the Universe over > 90 % of…
Elemental Abundance Measurements in Low-redshift Damped Lyman Alpha Absorbers
Joseph D. Meiring, Varsha P. Kulkarni, Pushpa Khare +6
We present elemental abundance measurements for 9 damped Ly-alpha systems (DLAs) and 1 sub-DLA at 0.1 < z < 1.5 from recent observations with the Multiple Mirror Telescope. Most of…
Extinction and metal column density of HI regions up to redshift z~2
G. Vladilo, M. Centurion, S. A. Levshakov +4
We used the photometric database of the Sloan Digital Sky Survey (SDSS) to estimate the reddening of 13 SDSS quasars selected on the basis of the presence of zinc absorption lines…