630 citations · 1.9k across the 26 of their papers we have counts for
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HD molecules at high redshift: A low astration factor of deuterium in a solar-metallicity DLA system at z=2.418
P. Noterdaeme, P. Petitjean, C. Ledoux +2
We present the detection of deuterated molecular hydrogen (HD) in the remote Universe in a damped Lyman-alpha cloud at zabs=2.418 toward the quasar SDSS J143912.04+111740.5. This i…
Detection of the 2175Å~ extinction feature and 21-cm absorption in two MgII systems at z~1.3
R. Srianand, N. Gupta, P. Petitjean +2
We have discovered two dusty intervening MgII absorption systems at z~1.3 in the Sloan Digital Sky Survey (SDSS) database. The overall spectra of both QSOs are red (u-K>4.5 mag) an…
Molecular hydrogen in high-redshift Damped Lyman-alpha systems: The VLT/UVES database
P. Noterdaeme, C. Ledoux, P. Petitjean +1
We present the current status of ongoing searches for molecular hydrogen in high-redshift (1.8 < zabs <= 4.2) Damped Lyman-alpha systems (DLAs) capitalising on observations perform…
Recovering the topology of the IGM at z~2
S. Caucci, S. Colombi, C. Pichon +3
We investigate how well the 3D density field of neutral hydrogen in the Intergalactic Medium (IGM) can be reconstructed using the Lyman-alpha absorptions observed along lines of si…
The Nitrogen and Oxygen abundances in the neutral gas at high redshift
Patrick Petitjean, Cedric Ledoux, R. Srianand
We study the Oxygen and Nitrogen abundances in the interstellar medium of high-redshift galaxies. We use high resolution and high signal-to-noise ratio spectra of Damped Lyman-alph…
In response to the comments by Murphy et al. (arxiv:0708.3677)
Raghunathan Srianand, Hum Chand, Patrick Petitjean +1
In their comment, Murphy et al. (arxiv:0708.3677) criticize the fitting procedure we used in two previous papers [Srianand et al. 2004(Paper I) and Chand et al. 2004 (Paper II)] an…