506 citations · 3.4k across the 27 of their papers we have counts for
26 papers
Sharpening quasar absorption lines with ESPRESSO: Temperature of warm gas at , constraints on the Mg isotopic ratio, and structure of cold gas at
P. Noterdaeme, S. Balashev, C. Ledoux +7
We present a high-resolution (R=140,000) spectrum of the bright quasar HE0001-2340 (z=2.26), obtained with ESPRESSO at the Very Large Telescope. We analyse three systems at z=0.45,…
Time variations of narrow absorption lines in high resolution quasar spectra
P. Boissé, J. Bergeron, J. X. Prochaska +2
Aims. We have searched for temporal variations of narrow absorption lines in high resolution quasar spectra. A sample of 5 distant sources have been assembled, for which 2 spectra…
Search for cold gas in strong MgII absorbers at 0.5<z<1.5: nature and evolution of 21-cm absorbers
N. Gupta, R. Srianand, P. Petitjean +3
We report 4 new detections of 21-cm absorption from a systematic search of 21-cm absorption in a sample of 17 strong (Wr(MgII 2796)>1A) intervening MgII absorbers at 0.5<z<1.5. We…
A high resolution study of intergalactic O VI absorbers at z~2.3
S. Muzahid, R. Srianand, J. Bergeron +1
[Abridged] We present a detailed study of the largest sample of intervening O VI systems in the redshift range 1.9 < z < 3.1 detected in high resolution (R ~ 45,000) spectra of 18…
Disk, merger, or outflow ? Molecular gas kinematics in two powerful obscured QSOs at z>3.4
M. Polletta, N. P. H. Nesvadba, R. Neri +3
We report on the detection of bright CO(4-3) line emission in two powerful, obscured quasars discovered in the SWIRE survey, SW022513 and SW022550 at z>3.4. We analyze the line str…
The dynamics of the ionized and molecular ISM in powerful obscured quasars at z>=3.5
N. P. H. Nesvadba, M. Polletta, M. D. Lehnert +4
We present an analysis of the kinematics and excitation of the warm ionized gas in two obscured, powerful quasars at z>=3.5 from the SWIRE survey, SWIRE J022513.90-043419.9 and SWI…