A Milky Way with a massive, centrally concentrated thick disc: new Galactic mass models for orbit computations
Sign Up to like & getrecommendations! Published in 2017 at "Astronomy and Astrophysics"
DOI: 10.1051/0004-6361/201527346
Abstract: In this work, two new axisymmetric models for the Galactic mass distribution are presented. Motivated by recent results, these two models include the contribution of a stellar thin disc and of a thick disc, as… read more here.
Keywords: thick disc; thick; galactic mass; milky way ... See more keywords
Orbital eccentricities as indicators of stellar populations
Sign Up to like & getrecommendations! Published in 2021 at "Astronomy and Astrophysics"
DOI: 10.1051/0004-6361/202040017
Abstract: Aims. Based on a local sample from Gaia DR2 catalogue composed of 74 339 stars, we are able to derive more accurate kinematic statistics defining the local stellar populations and classify the stars in terms… read more here.
Keywords: stellar populations; velocity; thick disc; disc ... See more keywords
Bimodality of [α Fe]–[Fe/H] distributions is a natural outcome of dissipative collapse and disc growth in Milky Way-type galaxies
Sign Up to like & getrecommendations! Published in 2021 at "Monthly Notices of the Royal Astronomical Society"
DOI: 10.1093/mnras/staa3996
Abstract: We present a set of self-consistent chemo-dynamical simulations of MW-type galaxies formation to study the origin of the bimodality of $\alpha$-elements in stellar populations. We explore how the bimodality is related to the geometrically and… read more here.
Keywords: gas; bimodality; formation; thick disc ... See more keywords
Mapping the Milky Way with LAMOST– III. Complicated spatial structure in the outer disc
Sign Up to like & getrecommendations! Published in 2018 at "Monthly Notices of the Royal Astronomical Society"
DOI: 10.1093/mnras/sty1058
Abstract: We present {complexity} of the Galactic outer disc {by fitting the stellar volume densities of the red giant branch stars with a two-disc component model}. {The discs are confirmed to} extend to $R\sim19$\,kpc. The radial… read more here.
Keywords: thin disc; mapping milky; thick disc; outer disc ... See more keywords