Results 121 to 130 of about 8,408 (187)
The Chemical Evolution of Damped Lyman Alpha Galaxies
, 1995 uuencoded compressed postscript.
Pettini, M. +3 more
openaire +2 more sources
Lyman Break Galaxies and the Lyman-alpha Forest
, 2002 We use hydrodynamic simulations to predict correlations between Lya forest absorption and galaxies at redshift z~3. The probability distribution function (PDF) of Lya flux decrements shifts systematically towards higher values in the vicinity of galaxies, reflecting the overdense environments in which these galaxies reside. The predicted signal remains
Kollmeier, Juna A. +3 more
openaire +2 more sources
The Open Journal of AstrophysicsThe hydrogen Lyman-alpha (Ly$\alpha$) emission line, the brightest spectral feature of a photoionized gas, is considered an indirect tracer of the escape of Lyman continuum (LyC) photons, particularly when the intergalactic medium is too opaque for ...
Erik Solhaug +9 more
doaj +1 more source
Chasing Lyman alpha-emitting galaxies at z = 8.8
, 2018 Submitted to A&A, comments are ...
Laursen, Peter +4 more
openaire +2 more sources
The Astrophysical JournalWe present JWST observations of a gravitationally lensed, extremely metal-poor galaxy at redshift z = 8.203 ± 0.001 from the CANUCS survey. Based on the low oxygen to Balmer line ratios, we infer a gas-phase metallicity of 12 + log(O/H) = 6.85 (1.4 ...
Chris J. Willott +18 more
doaj +1 more source
Lyman Alpha Driven Outflows Around Star Forming Galaxies
, 2008 We present accurate Monte-Carlo calculations of Lyman Alpha (hereafter Lya) radiation pressure in a range of models which represent galaxies during various epochs of our Universe. We show that the radiation force that Lya photons exert on hydrogen gas in the neutral intergalactic medium (IGM), that surrounds minihalos that host the first stars, may ...
Dijkstra, Mark, Loeb, Abraham
openaire +2 more sources
The Astrophysical JournalWe investigate extended Ly α emission using integral-field unit (IFU) data from the Hobby–Eberly Telescope Dark Energy Experiment (or HETDEX). We apply the modified Shepard method to image 106,853 Ly α emitters (LAEs) and median-stack them as functions ...
Brianna McKay +10 more
doaj +1 more source
CECILIA: Ultradeep Rest-optical Spectra of Faint Galaxies at Cosmic Noon
The Astrophysical Journal LettersIntrinsically faint galaxies at z ∼ 2–3 offer critical insights into early galaxy formation, tracing low-metallicity, low-mass systems during cosmic noon and serving as analogs to reionization-era galaxies. We present ultradeep JWST/NIRSpec spectroscopy
Menelaos Raptis +8 more
doaj +1 more source
Discovery of diffuse optical emission lines from the inner Galaxy: Evidence for LI(N)ER-like gas. [PDF]
Sci Adv, 2020 Krishnarao D, Benjamin RA, Haffner LM.
europepmc +1 more source
CLASSY. XI. Tracing Neutral Gas Properties Using UV Absorption Lines and 21 cm Observations
The Astrophysical JournalRest-frame far-ultraviolet (FUV) observations from JWST are revolutionizing our understanding of the high- z galaxies that drove reionization and the mechanisms by which they accomplished it.
Kaelee S. Parker +17 more
doaj +1 more source