Results 121 to 130 of about 5,863 (203)

Lyman-alpha at Cosmic Noon II: The relationship between kinematics and Lyman-alpha in z~2-3 Lyman Break Galaxies

open access: yes
We report for the first time a relationship between galaxy kinematics and net Lyman-alpha equivalent width (net Lya EW) in star forming galaxies during the epoch of peak cosmic star formation.
Foran, Garry   +4 more
core   +1 more source

The Stellar Origin of “V-shaped” Spectral Energy Distributions in Lyα-emitting Little Red Dots Revealed by JWST/MIRI

open access: yesThe Astrophysical Journal
Understanding the nature of the high-redshift “V-shaped” little red dots (LRDs) recently uncovered by the James Webb Space Telescope (JWST) is crucial for constraining the early coevolution of galaxies and supermassive black holes (SMBHs).
Jian Ren   +10 more
doaj   +1 more source

Observing Lyman alpha emitters - How does Lyman alpha escape from galaxies? [Elektronisk resurs]

open access: yes, 2016
The Lyman alpha (Lyα) emission line has grown to become one of the most successful tools for finding galaxies at high redshift. At redshifts corresponding to the early cosmic times of reionization and primeval galaxy formation, the wavelength of Lyα is ...
Guaita, Lucia,   +4 more
core  

Disentangling the galactic and intergalactic components in 313 observed Lyman-alpha line profiles between redshift 0 and 5

open access: yesThe Open Journal of Astrophysics
Lyman-Alpha (Ly$\alpha$) photons emitted in star-forming galaxies undergo complex radiative transfer through the interstellar (ISM), circumgalactic (CGM), and intergalactic medium (IGM), imprinting characteristic signatures on their observed line ...
Siddhartha Gurung-López   +7 more
doaj   +1 more source

Local galaxies as damped Lyman-alpha absorber analogues

open access: yes, 2015
We calculate in detail the expected properties of low redshift DLAs under the assumption that they arise in the gaseous disks of galaxies like those in the z ≈ 0 population.
Verheijen, M A W   +4 more
core   +1 more source

Lyman Alpha Emitters in the Hierarchically Clustering Galaxy Formation

open access: yes, 2007
14 pages, 7 figures, 1 table; accepted to ApJ; the html abstract is replaced to match the accepted version, the .ps and .pdf files are strictly identical between the 2nd and the 3rd ...
Kobayashi, Masakazu A. R.   +2 more
openaire   +2 more sources

Deciphering Spatially Resolved Lyman-Alpha Profiles in Reionization Analogs: The Sunburst Arc at Cosmic Noon

open access: yesThe Open Journal of Astrophysics
The 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

Sizing up Lyman-alpha and Lyman Break Galaxies

open access: yes, 2011
Submitted to ApJ letters, comments ...
Malhotra, Sangeeta   +6 more
openaire   +2 more sources

In Search of the First Stars: An Ultra-compact and Very-low-metallicity Lyα Emitter Deep within the Epoch of Reionization

open access: yesThe Astrophysical Journal
We 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

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