Results 41 to 50 of about 195,665 (278)

Evolution of chemical abundances in Seyfert galaxies [PDF]

open access: yesAstronomy & Astrophysics, 2007
17 pages, 15 figures, 3 tables, accepted for publication in A& ...
Francesco Calura   +6 more
openaire   +6 more sources

A grid of chemical evolution models along the Hubble Sequence [PDF]

open access: yes, 2001
We have computed a grid of multiphase chemical evolution models whose results are valid for any spiral galaxy, using as input the maximum rotation velocity and the morphological type or index T.Comment: 2 pag., contribution to the conference Cosmic ...
Diaz, Angeles I.   +2 more
core   +3 more sources

The star formation and chemical evolution history of the Fornax dwarf spheroidal galaxy [PDF]

open access: yes, 2012
We have combined deep photometry in the B, V and I bands from CTIO/MOSAIC of the Sculptor dwarf spheroidal galaxy, going down to the oldest main sequence turn-offs, with spectroscopic metallicity distributions of red giant branch stars. This allows us to
T. D. Boer   +8 more
semanticscholar   +1 more source

Chemical evolution of elliptical galaxies with a variable IMF [PDF]

open access: yesAstronomy & Astrophysics, 2019
Growing evidence in recent years suggests a systematic variation of the stellar initial mass function (IMF), being top-heavy for starburst galaxies and possibly bottom-heavy for massive ellipticals.
Zhiqiang Yan   +3 more
semanticscholar   +1 more source

Chemical Evolution of Elliptical Galaxies and the ICM [PDF]

open access: yesAstrophysics and Space Science, 2003
4 pages, 2 figures, to appear in the ''Proceedings of The evolution of galaxies III.
Francesca Matteucci, Antonio Pipino
openaire   +3 more sources

Search for Extremely Metal-poor Stars with Gemini-N/Graces. I. Chemical-abundance Analysis

open access: yesThe Astrophysical Journal, 2023
We present stellar parameters and abundances of 13 elements for 18 very metal-poor (VMP; [Fe/H] < –2.0) stars, selected as extremely metal-poor (EMP; [Fe/H] < –3.0) candidates from the Sloan Digital Sky Survey and Large sky Area Multi-Object Fiber ...
Miji Jeong   +7 more
doaj   +1 more source

The Star Formation&Chemical Evolution History of the Sculptor Dwarf Spheroidal Galaxy [PDF]

open access: yes, 2012
We have combined deep photometry in the B,V and I bands from CTIO/MOSAIC of the Sculptor dwarf spheroidal galaxy, going down to the oldest Main Sequence Turn-Offs, with spectroscopic metallicity distributions of Red Giant Branch stars.
T. D. Boer   +8 more
semanticscholar   +1 more source

PÉGASE.3: A code for modeling the UV-to-IR/submm spectral and chemical evolution of galaxies with dust [PDF]

open access: yesAstronomy & Astrophysics, 2019
A code computing consistently the evolution of stars, gas and dust, as well as the energy they radiate, is required to derive reliably the history of galaxies by fitting synthetic spectral energy distributions (SEDs) to multiwavelength observations.
M. Fioc   +3 more
semanticscholar   +1 more source

Gas-phase Metallicity of Local Active Galactic Nuclei in the GASP and MaNGA Surveys: The Role of Ram Pressure Stripping

open access: yesThe Astrophysical Journal, 2023
Growing evidence in support of a connection between active galactic nuclei (AGN) activity and the ram pressure stripping (RPS) phenomenon has been found both observationally and theoretically in the past decades.
Giorgia Peluso   +7 more
doaj   +1 more source

Chemical evolution during gas-rich galaxy interactions [PDF]

open access: yes, 2011
We perform and analyse a set of galaxy interactions performed by using a self-consistent chemo-hydrodynamical model which includes star formation, supernova (SN) feedback and chemical evolution.
Josefa Pérez   +2 more
semanticscholar   +1 more source

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