The evolution history of the extended solar neighbourhood
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)....
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| Hauptverfasser: | , , |
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| Dokumenttyp: | Article (Journal) Konferenzschrift |
| Sprache: | Englisch |
| Veröffentlicht: |
07 March 2018
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| In: |
Proceedings of the International Astronomical Union
Year: 2017, Jahrgang: 12, Heft: S330, Pages: 168-171 |
| ISSN: | 1743-9221 |
| DOI: | 10.1017/S1743921317006299 |
| Online-Zugang: | Verlag, Volltext: https://doi.org/10.1017/S1743921317006299 Verlag, Volltext: https://www.cambridge.org/core/journals/proceedings-of-the-international-astronomical-union/article/evolution-history-of-the-extended-solar-neighbourhood/863643E4E4807D0E875212E7EA17F7BF 
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| Verfasserangaben: | Andreas Just, Kseniia Sysoliatina and Ioanna Koutsouridou |
| Zusammenfassung: | 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. |
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| Beschreibung: | Gesehen am 03.09.2019 |
| Beschreibung: | Online Resource |
| ISSN: | 1743-9221 |
| DOI: | 10.1017/S1743921317006299 |