Mapping the Lyman-Alpha Emission Around a z~6.6 QSO with MUSE: Extended Emission and a Companion at Close Separation
Emanuele Paolo Farina,Bram Venemans,Roberto Decarli,Joseph F. Hennawi,Fabian Walter,Eduardo Bañados,Chiara Mazzucchelli,Sebastiano Cantalupo,Fabrizio Arrigoni-Battaia,Ian D. McGreer +9 more
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TLDR
In this article, the authors used the Multi Unit Spectroscopic Explorer (MUSE) on the Very Large Telescope (VLT) to search for extended Lyman-Alpha emission around the z~6.6 QSO J0305-3150.Abstract:
We utilize the Multi Unit Spectroscopic Explorer (MUSE) on the Very Large Telescope (VLT) to search for extended Lyman-Alpha emission around the z~6.6 QSO J0305-3150. After carefully subtracting the point-spread-function, we reach a nominal 5-sigma surface brightness limit of SB = 1.9x10$^{-18}$ erg/s/cm$^2$/arcsec$^2$ over a 1 arcsec$^2$ aperture, collapsing 5 wavelength slices centered at the expected location of the redshifted Lyman-Alpha emission (i.e. at 9256 Ang.). Current data suggest the presence (5-sigma, accounting for systematics) of a Lyman-Alpha nebula that extends for 9 kpc around the QSO. This emission is displaced and redshifted by 155 km/s with respect to the location of the QSO host galaxy traced by the [CII] emission line. The total luminosity is L = 3.0x10$^{42}$ erg/s. Our analysis suggests that this emission is unlikely to rise from optically thick clouds illuminated by the ionizing radiation of the QSO. It is more plausible that the Lyman-Alpha emission is due to fluorescence of the highly ionized optically thin gas. This scenario implies a high hydrogen volume density of n$_H$ ~ 6 cm$^{-3}$. In addition, we detect a Lyman-Alpha emitter (LAE) in the immediate vicinity of the QSO: i.e., with a projected separation of 12.5 kpc and a line-of-sight velocity difference of 560 km/s. The luminosity of the LAE is L = 2.1x10$^{42}$ erg/s and its inferred star-formation-rate is SFR ~ 1.3 M$_\odot$/yr. The probability of finding such a close LAE is one order of magnitude above the expectations based on the QSO-galaxy cross-correlation function. This discovery is in agreement with a scenario where dissipative interactions favour the rapid build-up of super-massive black holes at early Cosmic times.read more
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The large- and small-scale properties of the intergalactic gas in the Slug Ly α nebula revealed by MUSE He II emission observations
Sebastiano Cantalupo,Gabriele Pezzulli,Simon J. Lilly,Raffaella Anna Marino,Sofia G. Gallego,Joop Schaye,Roland Bacon,Anna Feltre,Wolfram Kollatschny,Themiya Nanayakkara,Johan Richard,M. Wendt,Lutz Wisotzki,J. Xavier Prochaska +13 more
TL;DR: In this paper, the results of a deep MUSE integral-field spectroscopic search for non-resonant, extended HeII1640 and metal emission were reported.
Journal ArticleDOI
The REQUIEM Survey. I. A Search for Extended Lyα Nebular Emission around 31 z > 5.7 Quasars
Emanuele Paolo Farina,Fabrizio Arrigoni-Battaia,T. Costa,Fabian Walter,Joseph F. Hennawi,Joseph F. Hennawi,Alyssa B. Drake,Roberto Decarli,Thales A. Gutcke,Chiara Mazzucchelli,Marcel Neeleman,Iskren Y. Georgiev,Anna-Christina Eilers,Frederick B. Davies,Eduardo Bañados,Xiaohui Fan,Masafusa Onoue,Jan Torge Schindler,Bram Venemans,Feige Wang,Jinyi Yang,Sebastian Rabien,Lorenzo Busoni +22 more
TL;DR: In this paper, the authors presented results of their searches for extended Lyα halos around the first 31 targets observed as part of this program, revealing the presence of 12 Lyα nebulae, 8 of which are newly discovered.
Journal ArticleDOI
The REQUIEM Survey I: A Search for Extended Ly-Alpha Nebular Emission Around 31 z>5.7 Quasars.
Emanuele Paolo Farina,Fabrizio Arrigoni-Battaia,Tiago Costa,Fabian Walter,Joseph F. Hennawi,Alyssa B. Drake,Roberto Decarli,Thales A. Gutcke,Chiara Mazzucchelli,Marcel Neeleman,Iskren Y. Georgiev,Anna-Christina Eilers,Frederick B. Davies,Eduardo Bañados,Xiaohui Fan,Masafusa Onoue,Jan-Torge Schindler,Bram Venemans,Feige Wang,Jinyi Yang,Sebastian Rabien,Lorenzo Busoni +21 more
TL;DR: In this article, the Reionization Epoch QUasar InvEstigation with MUSE (REQUIEM) survey was conducted to detect 12 Ly-Alpha nebulae, 8 of which are newly discovered.
Journal ArticleDOI
400 pc Imaging of a Massive Quasar Host Galaxy at a Redshift of 6.6
Bram Venemans,Marcel Neeleman,Fabian Walter,Fabian Walter,Fabian Walter,Mladen Novak,Roberto Decarli,Joseph F. Hennawi,Hans-Walter Rix +8 more
TL;DR: In this article, high-resolution Atacama Large Millimeter/submillimeter Array imaging of the dust continuum and the ionized carbon line [C ii] in a luminous quasar host galaxy at z = 6.6, 800 million years after the big bang is reported.
Journal ArticleDOI
The diverse galaxy counts in the environment of high-redshift massive black holes in Horizon-AGN
Melanie Habouzit,Marta Volonteri,Rachel S. Somerville,Yohan Dubois,Sébastien Peirani,Sébastien Peirani,Christophe Pichon,Christophe Pichon,Christophe Pichon,Julien Devriendt +9 more
TL;DR: In this article, a large-scale simulation Horizon-AGN was used to find that statistically the most massive BHs reside in environments with the largest number counts of galaxies.
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