Results 131 to 140 of about 5,863 (203)
Lyman-alpha Cooling Emission from Galaxy Formation
, 2010 Recent studies have shown that galaxies accrete most of their baryons via the cold mode, from streams with temperatures T~10^4-10^5 K. At these temperatures, the streams should radiate primarily in the Lya line and have therefore been proposed as a model to power the extended, high-redshift objects known as Lya blobs and other high-redshift Lya sources.
Faucher-Giguere, C. -A. +4 more
openaire +2 more sources
Measuring the star formation rate density from CNOC2 [PDF]
, 2006 This thesis charts the evolution of the Universal Star Formation Rate Density (SFRD) across the redshift range 0.2 < z < 0.6, using the 2nd Canadian Network for Observational Cosmology Survey (CN0C2).
Whitaker, Richard James
core
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
, 2014 We examine the Mg II 2796, 2803 Angstrom, Lyman alpha, and nebular line emission in five bright star-forming galaxies at 1.66 less than z less than 1.91 that have been gravitationally lensed by foreground galaxy clusters. All five galaxies show prominent
Gladders, M. +8 more
core +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
Lyman Alpha Emitting Galaxies as a Probe of Reionization
, 2014 27 pages, 19 figures. Invited review submitted to PASA following revision based on referee report.
openaire +2 more sources
On the sizes of z>2 Damped Lyman-alpha Absorbing Galaxies
, 2012 Accepted for publishing in MNRAS ...
Krogager, J. -K. +7 more
openaire +2 more sources
Connecting Lyα and Ionizing Photon Escape in the Sunburst Arc
The Astrophysical JournalWe investigate the Ly α and Lyman continuum (LyC) properties of the Sunburst Arc, a z = 2.37 gravitationally lensed galaxy with a multiply imaged, compact region leaking LyC and a triple-peaked Ly α profile indicating direct Ly α escape.
M. Riley Owens +20 more
doaj +1 more source
Constraining Reionization with Lyman Alpha Emitting Galaxies
, 2015 17 pages, 6 figures. Book chapter in "Understanding the Epoch of Cosmic Reionization: Challenges and Progress", Springer International Publishing, Ed.
openaire +2 more sources
The Astrophysical JournalWe present a systematic study of merging galaxies among Lyα emitters (LAEs) using James Webb Space Telescope/NIRCam high-resolution imaging data. From a large sample of 817 spectroscopically confirmed LAEs at 3 6 to 70% at z
Jian Ren +10 more
doaj +1 more source