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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…
The evolution of neutral gas in damped Lyman systems from the XQ-100 survey
R. Sánchez-Ramírez, S. L. Ellison, J. X. Prochaska +10
We present a sample of 38 intervening Damped Lyman (DLA) systems identified towards 100 quasars, observed during the XQ-100 survey. The XQ-100 DLA sample is combined wi…
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…
The Extended Baryon Oscillation Spectroscopic Survey: Variability Selection and Quasar Luminosity Function
N. Palanque-Delabrouille, Ch. Magneville, Ch. Yèche +11
The SDSS-IV/eBOSS has an extensive quasar program that combines several selection methods. Among these, the photometric variability technique provides highly uniform samples, unaff…
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…