2.1k citations · 21.9k across the 84 of their papers we have counts for
6 papers · 2 filters
Discovery of extreme [OIII]5007A outflows in high-redshift red quasars
Nadia L. Zakamska, Fred Hamann, Isabelle Pâris +7
Black hole feedback is now a standard component of galaxy formation models. These models predict that the impact of black hole activity on its host galaxy likely peaked at z=2-3, t…
A Spectroscopic Survey of X-ray Selected AGN in the Northern XMM-XXL Field
Marie-Luise Menzel, Andrea Merloni, Antonis Georgakakis +10
This paper presents a survey of X-ray selected active galactic nuclei (AGN) with optical spectroscopic follow-up in a area of the equatorial XMM-XXL north fi…
Cold gas and a Milky Way-type 2175 Å bump in a metal-rich and highly depleted absorption system
Jingzhe Ma, Paul Caucal, Pasquier Noterdaeme +9
We report the detection of a strong Milky Way-type 2175 Å extinction bump at = 2.1166 in the quasar spectrum towards SDSS J121143.42+083349.7 from the Sloan Digital Sky Surv…
A coronagraphic absorbing cloud reveals the narrow-line region and extended Lyman- emission of QSO J0823+0529
Hassan Fathivavsari, Patrick Petitjean, Pasquier Noterdaeme +5
We report long-slit spectroscopic observations of the quasar SDSS J082303.22+052907.6 (3.1875), whose Broad Line Region (BLR) is partly eclipsed by a strong damp…
The Sloan Digital Sky Survey Reverberation Mapping Project: Rapid CIV Broad Absorption Line Variability
C. J. Grier, P. B. Hall, W. N. Brandt +22
We report the discovery of rapid variations of a high-velocity CIV broad absorption line trough in the quasar SDSS J141007.74+541203.3. This object was intensively observed in 2014…
VLT/UVES observations of extremely strong intervening damped Lyman-alpha systems: Molecular hydrogen and excited carbon, oxygen and silicon at log N(HI)=22.4
P. Noterdaeme, R. Srianand, H. Rahmani +5
We present a detailed analysis of three extremely strong intervening DLAs (log N(HI)>=21.7) observed towards quasars with VLT/UVES. We measure overall metallicities of [Zn/H]~-1.2,…