Results 101 to 110 of about 195,665 (278)
The Astrophysical JournalSpatial patterns of stellar elemental abundances encode rich information about a galaxy’s formation history. We analyze the radial, vertical, and azimuthal variations of metals in stars, both today and at formation, in the FIRE-2 cosmological simulations
Russell L. Graf +3 more
doaj +1 more source
Overmerging and M/L ratios in phenomenological galaxy formation models
, 1999 We show that the discrepancy between the Tully-Fisher relation and the luminosity function predicted by most phenomenological galaxy formation models is mainly due to overmerging of galaxy haloes.
Jimenez, Raul +2 more
core +1 more source
The chemical evolution of a Milky Way-like galaxy: the importance of a cosmologically motivated infall law [PDF]
, 2008 Aims. We aim to find a cosmologically motivated infall law to understand if the ΛCDM cosmology can reproduce the main chemical characteristics of a Milky Way-like spiral galaxy. Methods.
E. Colavitti, F. Matteucci, G. Murante
semanticscholar +1 more source
Multiphase Chemical Evolution in Elliptical Galaxies [PDF]
The Astrophysical Journal, 1996 The recent {\em ASCA} results show that the iron abundance of the X-ray gas of elliptical galaxies is less than the solar abundance ($Z_{\sun}$). The observed low iron abundance is inconsistent with the predictions of the previous chemical evolution models.
Yutaka Fujita +3 more
openaire +4 more sources
EPJ Web of Conferences, 2018 This contribution deals with the important subject of the nucleosynthesis of heavy elements in the Galaxy. After an overview of several observational features, the physical processes responsible mainly for the formation of heavy elements will be ...
El Eid Mounib F.
doaj +1 more source
LIMFAST. I. A Seminumerical Tool for Line Intensity Mapping
The 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
, 2006 We present 3D hydrodynamical simulations aimed to study the dynamical and chemical evolution of the interstellar medium in dwarf spheroidal galaxies.
Brighenti, F. +3 more
core +1 more source
Chemical Evolution of Zinc in the Galaxy [PDF]
Publications of the Astronomical Society of Japan, 2009 Abstract The local thermodynamic equilibrium (LTE) abundances of zinc (Zn) of our sample of 35 metal-poor stars were explored in the range of $-$3.0 $<$ [Fe$/$H] $<$ 0.0. Based on a combination of our Zn abundances and those obtained in the literature, the behavior of Zn was investigated in the range of $-$4.2 $< ...
Yu-ji Saito +3 more
openaire +2 more sources
Potential-driven Metal Cycling: JADES Census of Gas-phase Metallicity for Galaxies at 1 < z < 7
The Astrophysical Journal LettersThe gravitational potential is established as a critical determinant of gas-phase metallicity (12+log(O/H)) in low-redshift galaxies, whereas its influence remains unconfirmed at high redshifts.
Cheng Jia +11 more
doaj +1 more source
$\mathit{Chempy}$: A flexible chemical evolution model for abundance fitting - Do the Sun's abundances alone constrain chemical evolution models? [PDF]
, 2017 Elemental abundances of stars are the result of the complex enrichment history of their galaxy. Interpretation of observed abundances requires flexible modeling tools to explore and quantify the information about Galactic chemical evolution (GCE) stored ...
J. Rybizki, A. Just, H. Rix
semanticscholar +1 more source