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The evolution history of the extended solar neighbourhood

Published online by Cambridge University Press:  07 March 2018

Andreas Just ,
Kseniia Sysoliatina  and
Ioanna Koutsouridou
Andreas Just
Affiliation:
Zentrum für Astronomie der Universität Heidelberg, Astronomisches Rechen-Institut, Mönchhofstr. 12-14, 69120 Heidelberg email: just@ari.uni-heidelberg.de
Kseniia Sysoliatina
Affiliation:
Zentrum für Astronomie der Universität Heidelberg, Astronomisches Rechen-Institut, Mönchhofstr. 12-14, 69120 Heidelberg email: just@ari.uni-heidelberg.de
Ioanna Koutsouridou
Affiliation:
Zentrum für Astronomie der Universität Heidelberg, Astronomisches Rechen-Institut, Mönchhofstr. 12-14, 69120 Heidelberg email: just@ari.uni-heidelberg.de
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Abstract

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Our detailed analytic local disc model (JJ-model) quantifies the interrelation between kinematic properties (e.g. velocity dispersions and asymmetric drift), spatial parameters (scale-lengths and vertical density profiles), and properties of stellar sub-populations (age and abundance distributions). We discuss a radial extension of the disc evolution model representing an inside-out growth of the thin disc with constant thickness. Based on metallicity distributions of APOGEE red clump stars we derive the AMR as function of galactrocentric distance and show that mono-abundance as well as mono-age populations are flaring. The predictions of the JJ-model are consistent with the TGAS-RAVE data, which provide a significant improvement of the kinematic data and unbiased distances for more than 250,000 stars.

Keywords

Galaxy: diskGalaxy: kinematics and dynamicsGalaxy: evolutionGalaxy: solar neighbourhoodGalaxy: abundances
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 12 , Symposium S330: Astrometry and Astrophysics in the Gaia sky , April 2017 , pp. 168 - 171
Copyright
Copyright © International Astronomical Union 2018 

References

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