Results 91 to 100 of about 195,665 (278)
A model for the chemical evolution of the galaxy with refuses
Astrophysics and Space Science, 1994 11 pages (figures and table upon request), Tex, Ap.Spac.Sci. (in press)
Helio J. Rocha-Pinto +4 more
openaire +3 more sources
The Astrophysical JournalThe metal enrichment of a galaxy is determined by the cycle of baryons in outflows, inflows, and star formation. The relative contribution and timescale of each process sets the relationship between stellar mass, metallicity, and the star formation rate (
Nathalie A. Korhonen Cuestas +6 more
doaj +1 more source
New Evolutionary Synthesis code. An application to the irregular galaxy NGC 1560
, 2002 We have developed a new evolutionary synthesis code, which incorporates the output from chemical evolution models. We compare results of this new code with other published codes, and we apply it to the irregular galaxy NGC 1560 using sophisticated ...
Arimoto +28 more
core +1 more source
Two-process Model and Residual Abundance Analysis of the Milky Way Massive Satellites
The Astrophysical JournalThe “two-process model” is a promising technique for interpreting stellar chemical abundance data from large-scale surveys (e.g., the Sloan Digital Sky Survey IV/V and the Galactic Archeology with HERMES survey), enabling more quantitative empirical ...
Sten Hasselquist +6 more
doaj +1 more source
Chemical enrichment in very low-metallicity environments: Bootes I [PDF]
, 2014 We present different chemical evolution models for the ultrafaint dwarf galaxy Bootes I. We either assume that the galaxy accretes its mass through smooth infall of gas of primordial chemical composition (classical models) or adopt mass accretion ...
Bellazzini, Michele +3 more
core +2 more sources
THE CHEMICAL EVOLUTION OF THE URSA MINOR DWARF SPHEROIDAL GALAXY [PDF]
, 2010 We present an abundance analysis based on high-resolution spectra of 10 stars selected to span the full range in metallicity in the Ursa Minor (UMi) dwarf spheroidal (dSph) galaxy.
J. Cohen, Wenjin Huang
semanticscholar +1 more source
The Impact of Modeling Assumptions in Galactic Chemical Evolution Models [PDF]
, 2016 We use the OMEGA galactic chemical evolution code to investigate how the assumptions used for the treatment of galactic inflows and outflows impact numerical predictions.
Benoit Côté +4 more
semanticscholar +1 more source
The Astrophysical JournalWe present a pioneering, spatially resolved, multiphase gas abundance study on the blue compact dwarf galaxy NGC 5253, targeting 10 star-forming (SF) clusters inside six far-UV (FUV) Hubble Space Telescope/Cosmic Origins Spectrograph (COS) pointings with
Valentina Abril-Melgarejo +7 more
doaj +1 more source
Galactic and Cosmic Chemical Evolution with Hypernovae
, 2005 We provide new nucleosynthesis yields depending on metallicity and energy (i.e., (normal supernovae and hypernovae), and show the evolution of heavy element abundances from C to Zn in the solar neighborhood.
Kobayashi, Chiaki
core +1 more source
STAR FORMATION HISTORY AND CHEMICAL EVOLUTION OF THE SEXTANS DWARF SPHEROIDAL GALAXY [PDF]
, 2009 We present the star formation history (SFH) and chemical evolution of the Sextans dSph galaxy as a function of a galactocentric distance. We derive these from the VI photometry of stars in the 42′ × 28′ field using the SMART model developed by Yuk & Lee ...
M. Lee +4 more
semanticscholar +1 more source