Results 21 to 30 of about 77,216 (325)

The chemical evolution of the Milky Way [PDF]

open access: yesProceedings of Frontier Research in Astrophysics – II — PoS(FRAPWS2016), 2017
10 pages, 6 figures, in Frontier Research in Astrophysics - II 23-28 May 2016 Mondello (Palermo ...
Matteucci, Francesca   +3 more
openaire   +2 more sources

Stellar Mass and Velocity Functions of Galaxies: Backward evolution and the fate of Milky Way siblings [PDF]

open access: green, 2010
We attempt in this paper to check the consistency of the observed Stellar Mass Function (SMF), SFR functions and the cosmic star formation rate density with simple backward evolutionary models. Starting from observed SMF for star-forming galaxies, we use
S. Boissier, V. Buat, O. Ilbert
openalex   +5 more sources

The origin of the Milky Way globular clusters [PDF]

open access: yes, 2016
We present a cosmological zoom-in simulation of a Milky Way-like galaxy used to explore the formation and evolution of star clusters. We investigate in particular the origin of the bimodality observed in the colour and metallicity of globular clusters ...
Agertz, Oscar   +2 more
core   +2 more sources

The Tilt of the Velocity Ellipsoid of Different Galactic Disk Populations

open access: yesThe Astrophysical Journal, 2023
The tilt of the velocity ellipsoid is a helpful tracer of the gravitational potential of the Milky Way. In this paper, we use nearly 140,000 red clump (RC) stars selected from LAMOST and Gaia to make a detailed analysis of the tilt of the velocity ...
Weixiang Sun, Han Shen, Xiaowei Liu
doaj   +1 more source

Dynamical evolution of a bulge in an N-body model of the Milky Way [PDF]

open access: yes, 2011
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.
Gerhard, Ortwin   +2 more
core   +2 more sources

The Rapid Onset of Stellar Bars in the Baryon-dominated Centers of Disk Galaxies

open access: yesThe Astrophysical Journal, 2023
Recent observations of high-redshift galactic disks ( z ≈ 1–3) show a strong negative trend in the dark-matter (DM) fraction f _DM with increasing baryon surface density.
Joss Bland-Hawthorn   +3 more
doaj   +1 more source

The influence of nova nucleosynthesis on the chemical evolution of the Galaxy [PDF]

open access: yes, 2000
We adopt up-to-date yields of 7Li, 13C, 15N from classical novae and use a well tested model for the chemical evolution of the Milky Way in order to predict the temporal evolution of these elemental species in the solar neighborhood.
A Renzini   +20 more
core   +2 more sources

Secular Evolution in the Milky Way [PDF]

open access: yesProceedings of the International Astronomical Union, 2012
AbstractI will review the secular evolution of the Milky Way disk and bulge with particular attention to the bulge and disk. Evidence for the importance of stellar migration in the Solar neighbourhood will be presented. The upcoming Gaia satellite will lead to a wealth of new data with which to explore these effects.
openaire   +1 more source

The Gaia-ESO Survey: the selection function of the Milky Way field stars [PDF]

open access: yes, 2016
The Gaia-ESO Survey was designed to target all major Galactic components (i.e., bulge, thin and thick discs, halo and clusters), with the goal of constraining the chemical and dynamical evolution of the Milky Way.
Bensby, T.   +28 more
core   +4 more sources

The Imprint of Clump Formation at High Redshift. II. The Chemistry of the Bulge

open access: yesThe Astrophysical Journal, 2023
In Paper I, we showed that clumps in high-redshift galaxies, having a high star formation rate density (Σ _SFR ), produce disks with two tracks in the [Fe/H]–[ α /Fe] chemical space, similar to that of the Milky Way’s (MW’s) thin+thick disks.
Victor P. Debattista   +13 more
doaj   +1 more source

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