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The age structure of stellar populations in the solar vicinity. Clues of a two-phase formation history of the Milky Way disk
M. Haywood, P. Di Matteo, M. Lehnert +2
We analyze high quality abundances data of solar neighborhood stars and show that there are two distinct regimes of [alpha/Fe] versus age which we identify as the epochs of the thi…
On the origin of the clumpy streams of Palomar 5
Alessandra Mastrobuono-Battisti, Paola Di Matteo, Marco Montuori +1
In this paper we report a study (see Mastrobuono-Battisti et al., 2012) about the formation and characteristics of the tidal tails around Palomar 5 along its orbit in the Milky Way…
Signatures of radial migration in barred galaxies: Azimuthal variations in the metallicity distribution of old stars
P. Di Matteo, M. Haywood, F. Combes +2
By means of N-body simulations, we show that radial migration in galaxy disks, induced by bar and spiral arms, leads to significant azimuthal variations in the metallicity distribu…