Results 21 to 30 of about 8,049,523 (305)
Formation and Evolution of the Milky Way [PDF]
Symposium - International Astronomical Union, 1997 To paint with broad brush strokes, the spectrum of Galactic formation models has as extrema what may be termed the “fast and smooth” and the “slow and lumpy” scenarios. Appropriate or not, to ascribe as champions of these views the works of, respectively, Eggen et al.
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On the chemical evolution of the Milky Way [PDF]
Proceedings of the International Astronomical Union, 2008 AbstractI discuss three different topics concerning the chemical evolution of the Milky Way (MW). 1) The metallicity distribution of the MW halo; it is shown that this distribution can be analytically derived in the framework of the hierarchical merging scenario for galaxy formation, assuming that the component sub-haloes had chemical properties ...
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Chemodynamical evolution of the Milky Way disk [PDF]
Astronomy & Astrophysics, 2013 In the first paper of this series, we present a new approach for studying the chemo-dynamical evolution in disk galaxies, which consists of fusing disk chemical evolution models with compatible numerical simulations of galactic disks. This method avoids known star formation and chemical enrichment problems encountered in simulations.
Minchev, I., Chiappini, C., Martig, M.
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ORIGIN AND EVOLUTION OF THE ABUNDANCE GRADIENT ALONG THE MILKY WAY DISK
, 2009 Based on a simple model of the chemical evolution of the Milky Way disk, we investigate the disk oxygen abundance gradient and its time evolution. Two star formation rates (SFRs) are considered, one is the classical Kennicutt-Schmidt law (Psi = 0.25 ...
Chang, R. X. +3 more
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The evolution of carbon and oxygen in the bulge and disk of the Milky Way [PDF]
Astronomy & Astrophysics, 2009 The evolution of C and O abundances in the Milky Way can impose strong constraints on stellar nucleosynthesis and help understanding the formation and evolution of our Galaxy. The aim is to review the measured C and O abundances in the disk and bulge of the Galaxy and compare them with model predictions.
CESCUTTI, GABRIELE +3 more
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Searching for Milky Way twins: Radial abundance distribution as a strict criterion [PDF]
, 2023 We search for Milky Way-like galaxies among a sample of approximately 500 galaxies. The characteristics we considered of the candidate galaxies are the following: stellar mass M_star, optical radius R_25, rotation velocity V_rot, central oxygen abundance
G., Tautvaisiene +8 more
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Chemical Evolution of the Milky Way and Chemical Tagging [PDF]
, 2022 One of the most important unsolved mysteries of astronomy is the formation and evolution of galaxies. The Milky Way is an ideal testbed for testing our understanding of galaxy evolution, as we can directly observe individual stars and their properties ...
Chen, Boquan
core
Dynamical evolution of a bulge in an N-body model of the Milky Way [PDF]
, 2012 The detailed dynamical structure of the bulge in the Milky Way is currently under debate. Although kinematics of the bulge stars can be well reproduced by a boxy-bulge, the possible existence of a small embedded classical bulge can not be ruled out.
I. Martinez-Valpuesta +9 more
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A study of radio continuum emission of the Milky Way Galaxy [PDF]
, 1996 The synchrotron emissivity distribution of the Milky Way Galaxy has been modelled from the 408 MHz allsky survey of Haslam et al.(1982) after separation of its thermal component with the help of IRAS 60 micron emission(Broadbent et al 1989).
Sanguansak, Nuanwan
core
Observational Constraints on Milky Way Halo Formation
, 2020 The formation of the Milky Way stellar halo is explored through the application of large-scale astronomical sky surveys. Multiple techniques are developed to identify and characterize metal-poor stars. Implications of the chemical abundance, spatial, and
Devin Whitten (17547927)
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