Results 61 to 70 of about 155,710 (341)

The time evolution of the Milky Way’s oxygen abundance gradient [PDF]

Monthly notices of the Royal Astronomical Society, 2018
© 2018 The Author(s). We study the evolution of oxygen abundance radial gradients as a function of time for the Milky Way Galaxy obtained with our MulChem chemical evolution model. We review the recent data of abundances for different objects observed in
M. Moll'a, 'Angeles I. D'iaz, O. Cavichia, B. Gibson, W. J. Maciel, R. Costa, Y. Ascasibar, C. G. Few   +7 more
semanticscholar   +1 more source

Dark matter halo cores and the tidal survival of Milky Way satellites [PDF]

Monthly notices of the Royal Astronomical Society, 2022
The cuspy central density profiles of cold dark matter (CDM) haloes make them highly resilient to disruption by tides. Self-interactions between dark matter particles, or the cycling of baryons, may result in the formation of a constant density core ...
R. Errani, J. Navarro, J. Peñarrubia, B. Famaey, R. Ibata   +4 more
semanticscholar   +1 more source

Structure and Evolution of the Milky Way [PDF]

, 2011
Proc. of the workshop "Red Giants as Probes of the Structure and Evolution of the Milky Way" (Roma, 15-17 Nov 2010), Astrophysics and Space Science Proceedings, ISBN 978-3-642-18417-8 (eds. A. Miglio, J. Montalban, A. Noels).
openaire   +3 more sources

Stellar elemental abundances constraining nucleosynthesis and chemical evolution of the universe [PDF]

EPJ Web of Conferences, 2022
Measurements of elemental abundances of stars in the Milky Way and surrounding dwarf galaxies in the past few decades have been providing useful constraints on modeling the nucleosynthesis and chemical evolution.
Aoki Wako
doaj   +1 more source

Chemical Evolution in the Milky Way: Rotation-based Ages for APOGEE-Kepler Cool Dwarf Stars [PDF]

Astrophysical Journal, 2019
We use models of stellar angular momentum evolution to determine ages for ∼500 stars in the APOGEE-Kepler Cool Dwarfs sample. We focus on lower-main-sequence stars, where other age-dating tools become ineffective.
Z. Claytor, J. Saders, Ângela R. G. Santos, R. García, S. Mathur, J. Tayar, M. Pinsonneault, M. Shetrone   +7 more
semanticscholar   +1 more source

Angular Momentum Variation of the Milky Way Thick Disk: The Dependence of Chemical Abundance and Evidence of the Inside-out Formation Scenario

The Astrophysical Journal, 2023
We investigate the angular momentum of mono-abundance populations (MAPs) of the Milky Way thick disk by using a sample of 26,076 giant stars taken from APOGEE Data Release (DR) 17 and Gaia early DR3.
Guozhen Hu, Zhengyi Shao, Lu Li
doaj   +1 more source

SEGUE-2: Old Milky Way Stars Near and Far

Astrophysical Journal Supplement Series, 2022
The Sloan Extension for Galactic Understanding and Exploration 2 (SEGUE-2) obtained 128,288 low-resolution spectra (R ∼ 1800) of 118,958 unique stars in the first year of the Sloan Digital Sky Survey III (2008–2009).
C. Rockosi, Young Sun Lee, H. Morrison, B. Yanny, Jennifer A. Johnson, S. Lucatello, J. Sobeck, T. Beers, C. Allende Prieto, D. An, D. Bizyaev, M. Blanton, L. Casagrande, D. Eisenstein, A. Gould, J. Gunn, P. Harding, I. Ivans, H. Jacobson, W. Janesh, G. Knapp, J. Kollmeier, S. Lépine, M. López-Corredoira, Zhibo Ma, H. Newberg, K. Pan, J. Prchlik, Conor Sayers, K. Schlesinger, J. Simmerer, D. Weinberg   +31 more
semanticscholar   +1 more source

The Milky Way tomography with APOGEE: intrinsic density distribution and structure of mono-abundance populations [PDF]

, 2022
The spatial distribution of mono-abundance populations (MAPs, selected in [Fe/H] and [Mg/Fe]) reflect the chemical and structural evolution in a galaxy and impose strong constraints on galaxy formation models.
J. Lian, G. Zasowski, Ted Mackereth, J. Imig, J. Holtzman, R. Beaton, J. Bird, K. Cunha, J. G. Fern'andez-Trincado, D. Horta, R. Lane, K. Masters, C. Nitschelm, A. Roman-Lopes   +13 more
semanticscholar   +1 more source

The structure and dynamical evolution of the stellar disc of a simulated Milky Way-mass galaxy [PDF]

, 2016
We study the structure, age and metallicity gradients, and dynamical evolution using a cosmological zoom-in simulation of a Milky Way-mass galaxy from the Feedback in Realistic Environments project.
Xiangcheng Ma, P. Hopkins, A. Wetzel, E. Kirby, D. Anglés-Alcázar, C. Faucher-Giguére, D. Keres̆, Eliot Quataert Caltech, Northwestern, Ucsd, Berkeley   +10 more
semanticscholar   +1 more source

The Chemical Evolution of the Milky Way [PDF]

, 2000
10 pages including 3 figs, to appear in "The Chemical Evolution of the Milky Way. Stars vs Clusters", Proceedings of the Sept.1999 Vulcano Workshop, F.Giovannelli and F.Matteucci eds (Kluwer, Dordrecht) in ...
openaire   +3 more sources