Results 1 to 10 of about 5,633,642 (286)

Identification of an [α/Fe]—Enhanced Thick Disk Component in an Edge-on Milky Way Analog

Astrophysical Journal Letters, 2021
The Milky Way disk consists of two prominent components—a thick, alpha-rich, low-metallicity component and a thin, metal-rich, low-alpha component.
Kenneth Freeman, Michael Hayden, Joss Bland-Hawthorn   +2 more
exaly   +3 more sources

The disk(s) of the Milky Way

AIP Conference Proceedings, 2013
We present a review of formation of the Milky Way's disk(s). We discuss the most recent disk formation and evolution scenarios that can be probed by the orbital eccentricities of stellar populations. These scenarios are included in two different frames, namely violent origin and secular evolution.
J. Concejo, O. Stanchev, Ts. B. Georgiev
openaire   +1 more source

The Center, Bulge, and Disk of the Milky Way

Astrophysics and Space Science Library, 1992
exaly   +2 more sources

The Milky Way disk non‐axisymmetries and galactoseismology

Astronomische Nachrichten, 2016
AbstractCurrent Galactic dynamical models still most often rely on the assumptions of a smooth time‐independent and axisymmetric gravitational potential. On the other hand, ab initio simulations in a cosmological context are not very flexible to precisely produce a model of our own Galaxy, or to disentangle the internal and the external/environmental ...
Famaey, Benoit, Monari, Giacomo, Siebert, Arnaud   +2 more
openaire   +1 more source

The Chemical Evolution of the Milky Way Disk

Space Science Reviews, 1997
Abstract The chemical evolution of the disk of our Galaxy is studied with numerical models assuming infall and a radially varying star formation rate (SFR). We propose a model with a minimal set of physically plausible assumptions which satisfies the main observational constraints of the disk, including those of the solar neighborhood.
openaire   +1 more source

The Evolution of the Milky Way Disk

2000
The Milky Way is a heterogeneous system, with at least three components (halo, bulge, disk) having very different chemical, photometric and kinematical properties. A reliable model for the evolution of the Milky Way accounting for those properties does not exist at present.
N. Prantzos, S. Boissier
openaire   +1 more source

EVOLUTION OF THE MILKY WAY DISK

2006
The Solar neighbourhood is where the physical basis for models of the evolu- tion of spiral galaxy disks can be tested most stringently. A new survey has provided full space motions, metallicities, ages, and duplicity information for over 14,000 nearby F and G dwarfs.
Nordström, Birgitta, Andersen, Johannes
openaire   +1 more source

Chemo-Spectral Evolution of the Milky way and of Spiral Disks

Astrophysics and Space Science, 1999
Our model and its application to the Milky Way are discussed in detail in Boissier & Prantzos (1998). The stellar yields of Woosley & Weaver (1995) are used to compute the chemical evolution, while the spectral one is coherently followed with the stellar evolution tracks of the Geneva group (Schaller et al. (1992), Charbonnel et al.
Samuel Boissier, Nikos Prantzos
openaire   +1 more source

Chemical evolution in the Milky Way Disk

AIP Conference Proceedings, 2006
Classical models of galactic evolution predict a smooth rise in heavy‐element abundance (metallicity) with time. We test this prediction with a new, large and unbiased sample of long‐lived stars in the solar neighbourhood and find that several of the key tests fail to support the classical predictions.
openaire   +2 more sources

The Disk of the Milky Way

Annals of the New York Academy of Sciences, 1992
openaire   +1 more source