211 citations · 1.2k across the 69 of their papers we have counts for
6 papers · 2 filters
Mapping HI 21-cm in the Klemola 31 group at z = 0.029: emission and absorption towards PKS2020-370
E. K. Maina, Abhisek Mohapatra, G. I. G. Jozsa +11
We present MeerKAT Absorption Line Survey (MALS) observations of the HI gas in the Klemola31 galaxy group (), located along the line of sight to the radio-loud quasar PKS2…
Emergence of a new HI 21-cm absorption component at z~1.1726 towards the gamma-ray blazar PKS~2355-106
Raghunathan Srianand, Neeraj Gupta, Patrick Petitjean +12
We report the emergence of a new HI 21-cm absorption at z_abs = 1.172635 in the damped Lyman-alpha absorber (DLA) towards the gamma-ray blazar PKS 2355-106 (z_em~1.639) using scien…
Dust depletion of metals from local to distant galaxies I: Peculiar nucleosynthesis effects and grain growth in the ISM
Christina Konstantopoulou, Annalisa De Cia, Jens-Kristian Krogager +8
Large fractions of metals are missing from the observable gas-phase in the interstellar medium (ISM) because they are incorporated into dust grains, a phenomenon called dust deplet…
HI gas playing hide-and-seek around a powerful FRI-type quasar at z2.1
N. Gupta, R. Srianand, E. Momjian +5
We present optical spectroscopic and milli-arcsecond scale radio continuum observations of the quasar M1540-1453 ( = 2.1040.002) that shows associated HI 21-cm absorpt…
Discovery of a damped Ly absorber originating in a spectacular interacting dwarf galaxy pair at
Erin Boettcher, Neeraj Gupta, Hsiao-Wen Chen +18
We present the discovery of neutral gas detected in both damped Ly absorption (DLA) and HI 21-cm emission outside of the stellar body of a galaxy, the first such detection in th…
Extremely strong DLAs at high redshift: Gas cooling and H formation
K. N. Telikova, S. A. Balashev, P. Noterdaeme +2
We present a spectroscopic investigation with VLT/X-shooter of seven candidate extremely strong damped Lyman- absorption systems (ESDLAs, cm$^{…