Stellar properties of KIC stars Virtual Observatory Resource

Authors
  1. Silva Aguirre V.
  2. Bojsen-Hansen M.
  3. Slumstrup D.
  4. Casagrande L.
  5. Kawata D.,Ciuca I.
  6. Handberg R.
  7. Lund M.N.
  8. Mosumgaard J.R.
  9. Huber D.
  10. Johnson J.A.,Pinsonneault M.H.
  11. Serenelli A.M.
  12. Stello D.
  13. Tayar J.
  14. Bird J.C.,Cassisi S.
  15. Hon M.
  16. Martig M.
  17. Nissen P.E.
  18. Rix H.W.
  19. Schonrich R.,Sahlholdt C.
  20. Trick W.H.
  21. Yu J.
  22. Published by
    CDS
Abstract

Investigations of the origin and evolution of the Milky Way disc have long relied on chemical and kinematic identifications of its components to reconstruct our Galactic past. Difficulties in determining precise stellar ages have restricted most studies to small samples, normally confined to the solar neighbourhood. Here, we break this impasse with the help of asteroseismic inference and perform a chronology of the evolution of the disc throughout the age of the Galaxy. We chemically dissect the Milky Way disc population using a sample of red giant stars spanning out to 2 kpc in the solar annulus observed by the Kepler satellite, with the added dimension of asteroseismic ages. Our results reveal a clear difference in age between the low- and high-{alpha} populations, which also show distinct velocity dispersions in the V and W components. We find no tight correlation between age and metallicity nor [{alpha}/Fe] for the high-{alpha} disc stars. Our results indicate that this component formed over a period of more than 2 Gyr with a wide range of [M/H] and [{alpha}/Fe] independent of time. Our findings show that the kinematic properties of young {alpha}-rich stars are consistent with the rest of the high-{alpha} population and different from the low-{alpha} stars of similar age, rendering support to their origin being old stars that went through a mass transfer or stellar merger event, making them appear younger, instead of migration of truly young stars formed close to the Galactic bar.

Keywords
  1. Giant stars
  2. Stellar masses
  3. Stellar radii
  4. Stellar ages
  5. Stellar distance
Bibliographic source Bibcode
2018MNRAS.475.5487S
See also HTML
https://cdsarc.cds.unistra.fr/viz-bin/cat/J/MNRAS/475/5487
IVOA Identifier IVOID
ivo://CDS.VizieR/J/MNRAS/475/5487

Access

Web browser access HTML
http://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/MNRAS/475/5487
https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/MNRAS/475/5487
http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/MNRAS/475/5487
IVOA Table Access TAP
http://tapvizier.cds.unistra.fr/TAPVizieR/tap
Run SQL-like queries with TAP-enabled clients (e.g., TOPCAT).
IVOA Cone Search SCS
For use with a cone search client (e.g., TOPCAT).
http://vizier.cds.unistra.fr/viz-bin/conesearch/J/MNRAS/475/5487/table1?
https://vizier.iucaa.in/viz-bin/conesearch/J/MNRAS/475/5487/table1?
http://vizieridia.saao.ac.za/viz-bin/conesearch/J/MNRAS/475/5487/table1?

History

2021-05-05T11:20:03Z
Resource record created
2021-05-05T11:20:03Z
Created
2021-07-05T11:57:43Z
Updated

Contact

Name
CDS support team
Postal Address
CDS, Observatoire de Strasbourg, 11 rue de l'Universite, F-67000 Strasbourg, France
E-Mail
cds-question@unistra.fr