Results 71 to 80 of about 141,253 (114)
The Astrophysical Journal LettersWe report on the statistical analysis of quasar photoevaporation at z ∼ 2.2 by comparing the density of surrounding Ly α emitters (LAEs) and continuum-selected galaxies, based on the imaging data of the Hyper Suprime-Cam (HSC) Subaru Strategic Program ...
Yuta Suzuki +5 more
doaj +1 more source
The clustering and X-ray properties of faint galaxies [PDF]
, 1994 The clustering properties of faint (23 ≤ B ≤ 27) galaxies were investigated, with the aim of obtaining information about their redshift distribution, N(z), and therefore about the processes of galaxy evolution causing the steep rise in the galaxy number ...
Roche, Nathan, Roche, N
core
, 2016 The escape of ionizing Lyman continuum (LyC) photons requires the existence of low-NH I sightlines, which also promote escape of Lyα. We use a suite of 2500 Lyα Monte-Carlo radiative transfer simulations through models of dusty, clumpy interstellar ...
Gronke, Max Balthasar +2 more
core +1 more source
Studying the absorption signatures of H I Lyα in the warm-hot circumgalactic medium with TNG50
Astronomy & AstrophysicsIn this study, we investigate the spectral signatures of neutral hydrogen Lyman-α absorption arising from the warm-hot gas component of the circumgalactic medium (CGM) around z = 0 Milky Way (MW)-like galaxies using the high-resolution TNG50 cosmological
Aparicio Marcos P. +4 more
doaj +1 more source
The nature and origin of disky elliptical galaxies [PDF]
, 2002 The observational trend that disky elliptical galaxies exhibit younger luminosity- weighted ages than boxy ellipticals is investigated. The presence of a possible young stellar disk embedded in these galaxies is explored by comparing kinematics derived ...
McDermid, Richard Morgan
core
Testing Lyα Emitters and Lyman-break Galaxies as Tracers of Large-scale Structures at High Redshifts
The Astrophysical JournalWe test whether Lyα emitters (LAEs) and Lyman-break galaxies (LBGs) can be good tracers of high- z large-scale structures, using the Horizon Run 5 cosmological hydrodynamical simulation.
Sang Hyeok Im +23 more
doaj +1 more source
Exploring the star formation histories of galaxies [PDF]
, 1999 In this thesis, I explore the star formation histories of both spiral and elliptical galaxies. In Part 1,1 present an in-depth study of the star formation histories of spiral galaxies with a wide range of properties. Optical and near-infrared colours are
Bell, Eric Findlay, Bell, E.F.
core
Lyα at Cosmic Dawn with a Simulated Roman Grism Deep Field
The Astronomical JournalThe slitless grism on the Nancy Grace Roman Space Telescope will enable deep near-infrared spectroscopy over a wide field of view. We demonstrate Roman's capability to detect Ly α galaxies at z > 7 using a multiple position angle (PA) observational ...
Isak G. B. Wold +4 more
doaj +1 more source
Astronomy & AstrophysicsContext. JWST provides a unique dataset for studying the earliest stages of reionisation at z > 9, promising insights into the first galaxies. Many JWST/NIRSpec prism spectra of z > 5 galaxies have revealed smooth Lyman-alpha breaks, implying damping ...
Mason Charlotte A. +5 more
doaj +1 more source
The Astrophysical JournalWe present the design and first results of the inner circumgalactic medium (CGM) of QSO line-of-sight emitting galaxies at z ∼ 2–3, Keck Baryonic Structure Survey (KBSS)-InCLOSE.
Evan Haze Nuñez +12 more
doaj +1 more source