Discovery of three new near-pristine absorption clouds at $z=2.6$-4.4

Autor: P Frédéric Robert, Michael T Murphy, John M O’Meara, Neil H M Crighton, Michele Fumagalli

Publikováno v: Monthly Notices of the Royal Astronomical Society

We report the discovery of three new "near-pristine" Lyman Limit Systems (LLSs), with metallicities ~1/1000 solar, at redshifts 2.6, 3.8 and 4.0, with a targeted survey at the Keck Observatory. High resolution echelle spectra of eight candidates yiel

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::768009efef90ad08869720682fa10895

MUSEQuBES: characterizing the circumgalactic medium of redshift ≍3.3 Lyα emitters

Autor: Lutz Wisotzki, Raffaella Anna Marino, Sean D. Johnson, Sowgat Muzahid, Johannes Zabl, Nicolas Bouché, Martin Wendt, Michael V. Maseda, Joop Schaye, Sebastiano Cantalupo

Publikováno v: Monthly Notices of the Royal Astronomical Society
Monthly Notices of the Royal Astronomical Society, Oxford University Press (OUP): Policy P-Oxford Open Option A, 2021, 508 (4), pp.5612-5637. ⟨10.1093/mnras/stab2933⟩
Monthly Notices of the Royal Astronomical Society, 508(4), 5612-5637
Monthly Notices of the Royal Astronomical Society, 508 (4)
Monthly Notices of the Royal Astronomical Society, 2021, 508 (4), pp.5612-5637. ⟨10.1093/mnras/stab2933⟩

We present the first characterization of the circumgalactic medium of Ly α emitters (LAEs), using a sample of 96 z ≈ 3.3 LAEs detected with the VLT/MUSE in fields centred on eight bright background quasars. The LAEs have low Ly α luminosities ($\

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ecdc9ee48c60fe06f001c38693993169
https://doi.org/10.1093/mnras/stab2933

MusE GAs FLOw and Wind (MEGAFLOW) VIII. Discovery of a Mgii emission halo probed by a quasar sightline

Autor: Jarle Brinchmann, Nicolas Bouché, Sowgat Muzahid, Johannes Zabl, Thierry Contini, Joop Schaye, Floriane Leclercq, Johan Richard, Ilane Schroetter, Martin Wendt, Lutz Wisotzki, Roland Bacon, Sebastiano Cantalupo, Thibault Garel

Publikováno v: Monthly Notices of the Royal Astronomical Society
Monthly Notices of the Royal Astronomical Society, 2021, 507 (3), pp.4294-4315. ⟨10.1093/mnras/stab2165⟩
Monthly Notices of the Royal Astronomical Society, Oxford University Press (OUP): Policy P-Oxford Open Option A, 2021, 507 (3), pp.4294-4315. ⟨10.1093/mnras/stab2165⟩
Monthly Notices of the Royal Astronomical Society, 507(3), 4294-4315
Monthly Notices of the Royal Astronomical Society, 507 (3)

Using deep (11.2hr) VLT/MUSE data from the MEGAFLOW survey, we report the first detection of extended MgII emission from a galaxy's halo that is probed by a quasar sightline. The MgII $\lambda\lambda$ 2796,2803 emission around the $z = 0.702$ galaxy

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::55e5c06d240647751585367e7faf4c47
http://hdl.handle.net/10281/372559

The cosmic ultraviolet baryon survey (CUBS) - I. overview and the diverse environments of lyman limit systems at z < 1

Autor: Thomas M. Cooper, Claude André Faucher-Giguère, Erin Boettcher, Gregory Walth, Benjamin J. Weiner, Mandy C. Chen, Mary E. Putman, Michael Rauch, Sean D. Johnson, Joop Schaye, Kathy L. Cooksey, Fakhri S. Zahedy, Marc Rafelski, Steven V. Penton, Robert A. Simcoe, Hsiao-Wen Chen, Gwen C. Rudie, Jenny E. Greene, Sebastiano Cantalupo, Sebastian Lopez, Patrick Petitjean, John S. Mulchaey

Publikováno v: Monthly Notices of the Royal Astronomical Society, 497 (1)
arXiv
Monthly Notices of the Royal Astronomical Society, 497(1), 498-520

We present initial results from the Cosmic Ultraviolet Baryon Survey (CUBS). CUBS is designed to map diffuse baryonic structures at redshift z~ 17.2 over a total redshift survey pathlength of dz=9.3, and a number density of n(z)=0.43 (-0.18, +0.26).

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::5b0925a4e66f33844bb60014ac4124ce
http://hdl.handle.net/10281/372565

A limit on Planck-scale froth with ESPRESSO

Autor: Ryan Cooke, Louise Welsh, Michele Fumagalli, Max Pettini

Publikováno v: Monthly Notices of the Royal Astronomical Society

Some models of quantum gravity predict that the very structure of spacetime is `frothy' due to quantum fluctuations. Although the effect is expected to be tiny, if these spacetime fluctuations grow over a large distance, the initial state of a photon

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::5eff9276f116719d08db47ba77d05e89