Results 31 to 40 of about 9,204,018 (295)

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
openaire   +2 more sources

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

Formation of Galactic Components in Milky-Way-mass Galaxy Simulations [PDF]

, 2022
This thesis presents a computational study of the formation and evolution of Milky-Way-mass galaxies using FIRE-2 cosmological zoom-in simulations. All simulated galaxies experience an early period of bursty star formation that transitions to a late-time
Yu, Sijie
core   +1 more source

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
openaire   +3 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

The Milky Way - Our Home in the Universe

, 2018
Aakasha Ganga, Via Lactea or the Milky Way is our home in the Universe. The discovery of the telescope by Galileo Galilei had facilitated the sky watchers to notice a variety of geometrical forms in the sky.
Divakara Mayya
core   +1 more source

Are the Milky Way and Andromeda unusual? A comparison with Milky Way and Andromeda analogues

, 2020
Our Milky Way provides a unique test case for galaxy evolution models because of our privileged position within the Milky Way's disc. This position also complicates comparisons between the Milky Way and external galaxies, due to our inability to observe ...
Boardman, N., Newman, J. A., Masters, K., Zasowski, G., Mackereth, T., Fielder, C., Krishnarao, D., Brinkmann, J., Drory, N., Stringfellow, G. S., Bershady, M., Andrews, B., Lane, R. R.   +12 more
core   +1 more source

The Formation of the Milky Way Disk

, 2000
We present theoretical results on the galactic abundance gradients of several chemical species for the Milky Way disk, obtained using an improved version of the two-infall model of Chiappini, Matteucci, & Gratton (1997) that incorporates a more realistic model of the galactic halo and disk.
Chiappini, Cristina, Matteucci, Francesca, Romano, Donatella   +2 more
openaire   +2 more sources

Dawn of the Milky Way Disk: Determination of When a Rotationally Supported Disk Appears and Dating the Spin-up of the Disk

The Astrophysical Journal Letters
Spiral galaxies, like the Milky Way, transform at some point in time into a rotationally supported system. Using an extant dataset consisting of 319,835 subgiants from LAMOST with precise ages from the literature, we determine, for the first time, the ...
Sofia Feltzing, Diane Feuillet, Thomas Bensby   +2 more
doaj   +1 more source

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