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Investigation of the chemical structure of our Galaxy using radial pulsating stars as tracers

Published online by Cambridge University Press:  09 March 2010

Marian Doru Suran
Marian Doru Suran*
Affiliation:
Astronomical Institute of the Romanian Academy, str. Cutitul de Argint 5, RO-040557, Bucharest, Romania email: suran@aira.astro.ro
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Abstract

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In this paper we try to determine the properties of different galactic components (2 < r < 12kpc) using radial pulsating stars (RPS stars) as tracers. For RPS stars in Galaxy we use a quasi-seismological inversion method (Post Theoretical Mass Method, PTM) which allows us to determine the mass M and the abundance Z for each star. Based on PTM method and using RPS stars as tracers we could determine the chemical structure and evolution of the Galaxy: abundance gradients and segregation between different evolutionary populations. This method is planned to be extended further using the RPS star observed by the KEPLER space mission.

Keywords

ISM: abundances
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 5 , Symposium S265: Chemical Abundances in the Universe: Connecting First Stars to Planets , August 2009 , pp. 378 - 379
Copyright
Copyright © International Astronomical Union 2010

References

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Suran, M. D. 1990, Contrib. Astron. Obs. Skalnat Pleso, 20, 77Google Scholar