Results 1 to 10 of about 28,189 (316)

A self-similar model of galaxy formation and dark halo relaxation [PDF]

open access: yesJournal of Cosmology and Astroparticle Physics, 2023
We develop a spherical self-similar model for the formation of a galaxy through gas collapsing in an isolated self-gravitating dark matter halo. As is well known, the self-similarity assumption makes the problem eminently tractable by reducing it to a ...
Premvijay Velmani, A. Paranjape
semanticscholar   +1 more source

CEERS Key Paper. I. An Early Look into the First 500 Myr of Galaxy Formation with JWST [PDF]

open access: yesAstrophysical Journal Letters, 2022
We present an investigation into the first 500 Myr of galaxy evolution from the Cosmic Evolution Early Release Science (CEERS) survey. CEERS, one of 13 JWST ERS programs, targets galaxy formation from z ∼ 0.5 to >10 using several imaging and ...
S. Finkelstein   +66 more
semanticscholar   +1 more source

Galaxy formation and evolution

open access: yesTheoretical and Natural Science, 2023
Galaxies as the most important structures in the universe and Galaxy formation is a sequential redistribution process.The basic picture of galaxy formation was first proposed by White and Rees.The physical processes involved in galaxy formation are very ...
Zeyue Xu
semanticscholar   +1 more source

Morphologies of Galaxies at z ≳ 9 Uncovered by JWST/NIRCam Imaging: Cosmic Size Evolution and an Identification of an Extremely Compact Bright Galaxy at z ∼ 12

open access: yesThe Astrophysical Journal, 2023
We present morphologies of galaxies at z ≳ 9 resolved by JWST/NIRCam 2–5 μ m imaging. Our sample consists of 22 galaxy candidates identified by stringent dropout and photo- z criteria in GLASS, CEERS, SMACS J0723, and Stephan’s Quintet flanking fields ...
Yoshiaki Ono   +10 more
doaj   +1 more source

LIMFAST. I. A Seminumerical Tool for Line Intensity Mapping

open access: yesThe Astrophysical Journal, 2023
We present LIMFAST, a seminumerical code for simulating high-redshift galaxy formation and cosmic reionization as revealed by multitracer line intensity mapping (LIM) signals.
Lluís Mas-Ribas   +4 more
doaj   +1 more source

Globular cluster formation and evolution in the context of cosmological galaxy assembly: open questions [PDF]

open access: yesProceedings of the Royal Society A, 2018
We discuss some of the key open questions regarding the formation and evolution of globular clusters (GCs) during galaxy formation and assembly within a cosmological framework.
D. Forbes   +11 more
semanticscholar   +1 more source

New Insight on Galaxy Formation and Evolution from Keck Spectroscopy of the Hawaii Deep Fields [PDF]

open access: yes, 1996
We present the results of spectroscopic studies with the LRIS spectrograph on Keck of two of the Hawaii deep survey fields. The 393 objects observed cover an area of 26.2 square arcmin and constitute a nearly complete sample down to K = 20, I = 23, and B
L. Cowie, A. Songaila, E. Hu, J. Cohen
semanticscholar   +1 more source

The formation and evolution of massive galaxies [PDF]

open access: yesResearch in Astronomy and Astrophysics, 2021
The discovery of massive galaxies at high redshifts, especially the passive ones, poses a big challenge for the current standard galaxy formation models. Here we use the semi-analytic galaxy formation model developed by Henriques et al.
Yingjie Jing   +4 more
semanticscholar   +1 more source

LIMFAST. II. Line Intensity Mapping as a Probe of High-redshift Galaxy Formation

open access: yesThe Astrophysical Journal, 2023
The epoch of reionization (EoR) offers a unique window into the dawn of galaxy formation, through which high-redshift galaxies can be studied by observations of both themselves and their impact on the intergalactic medium.
Guochao Sun   +7 more
doaj   +1 more source

Dust-regulated galaxy formation and evolution: a new chemodynamical model with live dust particles [PDF]

open access: yes, 2015
Interstellar dust plays decisive roles in the conversion of neutral to molecular hydrogen (H_2), the thermodynamical evolution of interstellar medium (ISM), and the modification of spectral energy distributions (SEDs) of galaxies.
K. Bekki
semanticscholar   +1 more source

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