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Sofia Feltzing

Professor

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On the metallicity dependence of the [Y/Mg]–age relation for solar-type stars

Författare

  • Sofia Feltzing
  • Louise M. Howes
  • Paul J. Mcmillan
  • Edita Stonkutė

Summary, in English

Several recent studies of solar twins in the solar neighbourhood have shown a tight correlation between various elemental abundances and age, in particular [Y/Mg]. If this relation is real and valid for other types of stars as well as elsewhere in the Galaxy, it would provide a very powerful tool to derive ages of stars without the need to resort to determining their masses (evolutionary stage) very precisely. The method would also likely work if the stellar parameters have relatively large errors. The studies presented in the recent literature span a narrow range of [Fe/H]. By studying a larger sample of solar neighbourhood dwarfs with a much larger range of [Fe/H], we find that the relation between [Y/Mg] and age depends on the [Fe/H] of the stars. Hence, it appears that the [Y/Mg]–age relation is unique to solar analogues.

Avdelning/ar

  • Astronomi - Har omorganiserats

Publiceringsår

2017-02-11

Språk

Engelska

Sidor

109-113

Publikation/Tidskrift/Serie

Monthly Notices of the Royal Astronomical Society: Letters

Volym

465

Issue

1

Dokumenttyp

Artikel i tidskrift

Förlag

Oxford University Press

Ämne

  • Astronomy, Astrophysics and Cosmology

Aktiv

Published

ISBN/ISSN/Övrigt

  • ISSN: 1745-3925