Results 31 to 40 of about 6,029 (310)
The Astrophysical Journal Letters, 2023 The quenched fraction of satellite galaxies is aligned with the orientation of the halo’s central galaxy, such that on average, satellites form stars at a lower rate along the major axis of the central.
Juliana S. M. Karp +2 more
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From Clusters to Proto-Clusters: The Infrared Perspective on Environmental Galaxy Evolution
Universe, 2022 Environment is one of the primary drivers of galaxy evolution; via multiple mechanisms, it can control the critical process of transforming galaxies from star forming to quiescent, commonly termed “quenching”. Despite its importance, however, we still do
Stacey Alberts, Allison Noble
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Formation and Evolution of Disk Galaxies [PDF]
Proceedings of the International Astronomical Union, 2003 AbstractGlobal star formation is the key to understanding galaxy disk formation. This in turn depends on gravitational instability of disks and continuing gas accretion as well as minor merging. A key component is feedback from supernovae. Primary observational constraints on disk galaxy formation and evolution include the Schmidt-Kennicutt law, the ...
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Models of Late-type Disk Galaxies: 1-D Versus 2-D
Open Astronomy, 2014 We investigate the effects of stochasticity on the observed galaxy parameters by comparing our stochastic star formation two-dimensional (2-D) galaxy evolution models with the commonly used one-dimensional (1-D) models with smooth star formation. The 2-D
Mineikis T., Vansevičius V.
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The “Building Blocks” of Stellar Halos
Galaxies, 2017 The stellar halos of galaxies encode their accretion histories. In particular, the median metallicity of a halo is determined primarily by the mass of the most massive accreted object.
Kyle A. Oman +2 more
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GAIA: Composition, formation and evolution of the Galaxy [PDF]
Astronomy & Astrophysics, 2001 Accepted by A&A: 25 pages, 8 ...
Perryman, M.A.C. +9 more
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The Gaia-ESO survey: Open clusters as tracers of galactic chemical evolution
Astronomy & AstrophysicsAims. We investigate the formation and evolutionary trajectory of the Milky Way’s inner and outer galactic regions using stars from open clusters in the Gaia-ESO OC survey. Methods. Using numerical simulations from Chempy, we leveraged Markov chain Monte
Boucher K. +12 more
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The Evolution of the Mass-Metallicity Relation at 0.20 < z < 0.35 [PDF]
Journal of Astronomy and Space Sciences, 2013 We present a spectroscopic study of 343 blue compact galaxies (BCGs) at 0.20 < z < 0.35 from the Sloan Digital Sky Survey (SDSS) DR7 data. We derive gas phase oxygen abundance using the empirical and direct method.
Jiwon Chung +2 more
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Star Formation Quenching in Quasar Host Galaxies
Frontiers in Astronomy and Space Sciences, 2017 Galaxy evolution is likely to be shaped by negative feedback from active galactic nuclei (AGN). In the whole range of redshifts and luminosities studied so far, galaxies hosting an AGN frequently show fast and extended outflows consisting in both ionized
Stefano Carniani, Stefano Carniani
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Gas Flows, Star Formation and Galaxy Evolution [PDF]
, 2004 20 pages, 10 figures, to be presented at the "Penetrating Bars through Masks of Cosmic Dust" conference in South Africa, proceedings published by Kluwer, Eds. D.L. Block, K.C. Freeman, I.
Beckman, John E. +3 more
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