Results 21 to 30 of about 8,310 (262)

Dust formation in Milky Way-like galaxies [PDF]

Monthly Notices of the Royal Astronomical Society, 2016
We introduce a dust model for cosmological simulations implemented in the moving-mesh code AREPO and present a suite of cosmological hydrodynamical zoom-in simulations to study dust formation within galactic haloes. Our model accounts for the stellar production of dust, accretion of gas-phase metals onto existing grains, destruction of dust through ...
McKinnon, Ryan, Torrey, Paul, Vogelsberger, Mark, McKinnon, Ryan Michael, Torrey, Paul A.   +4 more
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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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A Model for the Formation of the Milky Way [PDF]

Publications of the Astronomical Society of Australia, 2004
AbstractA new chemodynamical model for the formation and evolution of a Milky Way type galaxy is introduced. In this scenario, the galaxy forms inside a slowly growing dark matter halo in a ΛCDM cosmology. In contrast to the simple merger and collapse scenarios, the galactic mass grows continuously over a Hubble time.
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Abundance Gradients and the Formation of the Milky Way [PDF]

The Astrophysical Journal, 2001
In this paper we adopt a chemical evolution model, which is an improved version of the Chiappini, Matteucci and Gratton (1997) model, assuming two main accretion episodes for the formation of the Galaxy. The present model takes into account in more detail than previously the halo density distribution and explores the effects of a threshold density in ...
CHIAPPINI C., MATTEUCCI, MARIA FRANCESCA, ROMANO D.   +2 more
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Formation of the Milky Way

, 1997
We review observational evidence bearing on the formation of a prototypical large spiral galaxy, the Milky Way. New ground- and space-based studies of globular star clusters and dwarf spheroidal galaxies provide a wealth of information to constrain theories of galaxy formation.
Hesser, J. E., Stetson, P. B., Harris, W. E., Bolte, M., Smecker-Hane, T. A., Vandenberg, D. A., Bell, R. A., Bond, H. E., Bergh, S. van den, McClure, R. D., Fahlman, G. G., Richer, H. B.   +11 more
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THE FORMATION OF THE MILKY WAY IN THE COSMOLOGICAL CONTEXT [PDF]

, 2001
5 pages, conference proceeding. to appear in "Cosmic Evolution", eds. M. Lemoine and E.
openaire   +2 more sources

GTC Follow-up Observations of Very Metal-poor Star Candidates from DESI

The Astrophysical Journal, 2023
The observations from the Dark Energy Spectroscopic Instrument (DESI) will significantly increase the numbers of known extremely metal-poor stars by a factor of ∼10, improving the sample statistics to study the early chemical evolution of the Milky Way ...
Carlos Allende Prieto, David S. Aguado, Jonay I. González Hernández, Rafael Rebolo, Joan Najita, Christopher J. Manser, Constance Rockosi, Zachary Slepian, Mar Mezcua, Monica Valluri, Rana Ezzeddine, Sergey E. Koposov, Andrew P. Cooper, Arjun Dey, Boris T. Gänsicke, Ting S. Li, Katia Cunha, Siwei Zou, Jessica Nicole Aguilar, Steven Ahlen, David Brooks, Todd Claybaugh, Shaun Cole, Sarah Eftekharzadeh, Kevin Fanning, Jaime Forero-Romero, Satya Gontcho A Gontcho, Klaus Honscheid, Pascale Jablonka, Robert Kehoe, Theodore Kisner, Martin Landriau, Axel de la Macorra, Aaron Meisner, Ramón Miquel, John Moustakas, Jundan Nie, Claire Poppett, Francisco Prada, Mehdi Rezaie, Graziano Rossi, Eusebio Sánchez, Michael Schubnell, Ray Sharples, Malgorzata Siudek, Verne V. Smith, Gregory Tarlé, Fiorenzo Vincenzo, Benjamin Alan Weaver, Zhimin Zhou, Hu Zou   +50 more
doaj   +1 more source

Traces of the formation history of the Milky Way [PDF]

Proceedings of the International Astronomical Union, 2013
AbstractChemical and kinematical information is needed in order to understand and trace the formation history of our Galaxy. In the homogeneous large sample of F and G stars in the survey by Nordström et al. (2004), groups of stars with orbital parameters different from field stars were found by Helmi et al. (2006).
Nordström, Birgitta, Stonkute, E., Ženovienė, R., Tautvaišienė, G.   +3 more
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The Star Formation Rate of the Milky Way as Seen by Herschel

The Astrophysical Journal, 2022
Abstract We present a new derivation of the Milky Way’s current star formation rate (SFR) based on the data of the Herschel InfraRed Galactic Plane Survey (Hi-GAL). We estimate the distribution of the SFR across the Galactic plane from the star-forming clumps identified in the Hi-GAL survey and calculate the total SFR from the sum of ...
D. Elia, S. Molinari, E. Schisano, J. D. Soler, M. Merello, D. Russeil, M. Veneziani, A. Zavagno, A. Noriega-Crespo, L. Olmi, M. Benedettini, P. Hennebelle, R. S. Klessen, S. Leurini, R. Paladini, S. Pezzuto, A. Traficante, D. J. Eden, P. G. Martin, M. Sormani, A. Coletta, T. Colman, R. Plume, Y. Maruccia, C. Mininni, S. J. Liu   +25 more
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The Milky Way as a Star Formation Engine [PDF]

, 2014
The cycling of material from the interstellar medium (ISM) into stars and the return of stellar ejecta into the ISM is the engine that drives the "galactic ecology" in normal spirals, a cornerstone in the formation and evolution of galaxies through cosmic time.
Molinari, S., Bally, J., Glover, S., Moore, T., Noriega-Crespo, A., Plume, R., Testi, L., Vázquez-Semadeni, E., Zavagno, A., Bernard, J. -P., Martin, P.   +10 more
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