Results 11 to 20 of about 210,144 (261)
The Size Evolution of High-Redshift Galaxies [PDF]
The Astrophysical Journal, 2003 Hubble Space Telescope images of high-redshift galaxies selected via color and photometric redshifts are used to examine the size and axial ratio distribution of galaxies as a function of redshift at look-back times t > 8 Gyr.
H. Ferguson +16 more
semanticscholar +5 more sources
The nature of high-redshift galaxies [PDF]
Monthly Notices of the Royal Astronomical Society, 2001 Using semi-analytic models of galaxy formation set within the Cold Dark Matter (CDM) merging hierarchy, we investigate several scenarios for the nature of the high-redshift ($z \ga 2$) Lyman-break galaxies (LBGs). We consider a ``collisional starburst'' model in which bursts of star formation are triggered by galaxy-galaxy mergers, and find that a ...
Somerville, Rachel S. +2 more
openaire +3 more sources
Simulating JWST/NIRCam Color Selection of High-redshift Galaxies [PDF]
Astrophysical Journal, 2020 The Near Infrared Camera (NIRCam) instrument on the upcoming James Webb Space Telescope will offer an unprecedented view of the most distant galaxies.
K. Hainline +14 more
semanticscholar +1 more source
The Astrophysical Journal, 2023 We present images and a multiwavelength photometric catalog based on all of the JWST NIRCam observations obtained to date in the region of the Abell 2744 galaxy cluster.
Diego Paris +29 more
doaj +1 more source
Galaxy formation at high redshifts [PDF]
Nature, 1996 Sensitive optical surveys have revealed a large population of `faint blue galaxies' which are believed to be young galaxies, observed close to their time of formation. But there has been considerable uncertainty regarding the epochs at which these galaxies are observed, owing to the difficulties inherent in determining spectroscopic redshifts for very ...
Metcalfe, N. +4 more
openaire +2 more sources
“Direct” Gas-phase Metallicity in Local Analogs of High-redshift Galaxies: Empirical Metallicity Calibrations for High-redshift Star-forming Galaxies [PDF]
Astrophysical Journal, 2018 We study the direct gas-phase oxygen abundance using the well-detected auroral line [O iii]λ4363 in the stacked spectra of a sample of local analogs of high-redshift galaxies.
F. Bian, L. Kewley, M. Dopita
semanticscholar +1 more source
The Astrophysical Journal, 2023 We investigate the resolved kinematics of the molecular gas, as traced by the Atacama Large Millimeter/submillimeter Array in CO (2−1), of 25 cluster member galaxies across three different clusters at a redshift of z ∼ 1.6.
W. J. Cramer +16 more
doaj +1 more source
Dust in High‐Redshift Galaxies [PDF]
The Astrophysical Journal, 1997 Measurements of Zn and Cr abundances in damped Lyman alpha systems at absorption redshifts between 0.692 and 3.390 show that metals and dust are much less abundant in high redshift galaxies than in the Milky Way today. We conclude that the overall degree of metal enrichment of DLA galaxies approximately 13.5 Gyr ago is 1/15 solar.
Pettini, Max +3 more
openaire +2 more sources
The HDUV Survey: A Revised Assessment of the Relationship between UV Slope and Dust Attenuation for High-redshift Galaxies [PDF]
, 2017 We use a newly assembled sample of 3545 star-forming galaxies with secure spectroscopic, grism, and photometric redshifts at z = 1.5–2.5 to constrain the relationship between UV slope (β) and dust attenuation (LIR/LUV ≡ IRX).
N. Reddy +15 more
semanticscholar +1 more source
A fundamental relation between mass, SFR and metallicity in local and high redshift galaxies [PDF]
, 2010 We show that the mass-metallicity relation observed in the local universe is due to a more general relation between stellar mass M*, gas-phase metallicity and SFR.
F. Mannucci +4 more
semanticscholar +1 more source