Results 281 to 290 of about 7,795,018 (296)

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

The Formation and Early Evolution of the Milky Way Galaxy

Science, 2000
Recent observations indicate that the Milky Way may have formed by aggregation of gas and stars from a reservoir of preexisting small galaxies in the local universe. The process probably began more than 12 billion years ago with material of different original angular momentum following two separate evolutionary lines, one into the slowly rotating halo ...
openaire   +3 more sources

Formation and Evolution of the Milky Way

2003
The problem of understanding the formation of the Galaxy is part of the problem of explaining galaxy formation in general. In particular, we should try to understand the relative importance of mergers and dissipative collapse in the formation of all galaxies, and whether the observational information about our Galaxy is enough to explain the timescales
openaire   +1 more source

CNO Evolution: Milky Way, Dwarf Galaxies and DLAs

Astrophysics and Space Science, 2003
We compute the evolution of the C, N, O and Fe abundances as a function of time and galactocentric distance in the Milky Way (MW) for different sets of stellar yields. We then apply the ‘best’ nucleosynthesis prescriptions found for the MW to other galaxies.
Cristina Chiappini, Donatella Romano, Francesca Matteucci   +2 more
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

Milky Way Star Clusters and Gaia: A Review of the Ongoing Revolution

Universe, 2022
Tristan Cantat-Gaudin
exaly  

Warm dark matter constraints using Milky Way satellite observations and subhalo evolution modeling

Physical Review D, 2022
Shin'Ichiro Ando, Kenny Chun Yu Ng, Ariane Dekker   +2 more
exaly  

Unveiling the time evolution of chemical abundances across the Milky Way disc with APOGEE

Monthly Notices of the Royal Astronomical Society, 2023
Ivan Minchev, Tobias Buck, Bridget Ratcliffe   +2 more
exaly