Results 11 to 20 of about 2,086 (188)
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
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Finding High-redshift Galaxies with JWST [PDF]
The Astrophysical Journal, 2021 Abstract One of the primary goals for the upcoming James Webb Space Telescope is to observe the first galaxies. Predictions for planned and proposed surveys have typically focused on average galaxy counts, assuming a random distribution of galaxies across the observed field.
Charles L. Steinhardt +2 more
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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
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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
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The Size Evolution of High-Redshift Galaxies [PDF]
The Astrophysical Journal, 2004 5 pages, including 3 figures; uses emulateapj style; accepted by ApJL for publication in a special issue of early GOODS ...
Ferguson H. C. +16 more
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Disk Galaxies at High Redshift? [PDF]
Proceedings of the International Astronomical Union, 2007 AbstractThe successful implementation of integral field near-infrared spectrographs fed by adaptive optics is providing unprecedented views of gas motions within galaxies at redshifts z = 2 − 3, when the universe was forming stars at its peak rate. A complex picture of galaxy kinematics is emerging, with inflows, rotation within sometimes extended and ...
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THE PROPERTIES OF HIGH REDSHIFT GALAXIES
Revista Mexicana de Astronomía y Astrofísica, 2022 This work studies the connection between the first galaxies and their hosting dark matter halos in the early Universe when reionization is concluding. Our numerical models (already presented in an earlier study) trace the star formation history at z = 4 - 8, the galaxy stellar mass function, the stellar-to-halo mass distribution, and other high ...
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The IRX–β relation of high-redshift galaxies [PDF]
Monthly Notices of the Royal Astronomical Society, 2021 ABSTRACT The relation between infrared excess (IRX) and UV spectral slope (βUV) is an empirical probe of dust properties of galaxies. The shape, scatter, and redshift evolution of this relation are not well understood, however, leading to uncertainties in estimating the dust content and star formation rates (SFRs) of galaxies at high ...
Liang, Lichen +7 more
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Large Disklike Galaxies at High Redshift [PDF]
The Astrophysical Journal, 2003 LaTeX, 5 pages, 2 figures, 1 table.
Labbé, Ivo +13 more
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Galaxies at High Redshift and Reionization
Il Nuovo Cimento B, 2007 ASP Conference Series, Vol. 395 (50 years of NRAO, eds A. Bridle, J. Condon & G. Hunt)
Bunker, A. +7 more
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