Abundances of microlensed dwarf and subgiant stars Virtual Observatory Resource

Authors

1. Bensby T.
2. Johnson J.A.
3. Cohen J.
4. Feltzing S.
5. Udalski A.
6. Gould A.,Huang W.
7. Thompson I.
8. Simmerer J.
9. Aden D.

Published by

CDS

Abstract

We present a detailed elemental abundance analysis of OGLE-2008-BLG-209S, the source star of a new microlensing event towards the Bulge, for which we obtained a high-resolution spectrum with the MIKE spectrograph on the Magellan Clay telescope. We have performed four different analyses of OGLE-2008-BLG-209S. One method is identical to the one used for a large comparison sample of F and G dwarf stars, mainly thin and thick disc stars, in the Solar neighbourhood. We have also re-analysed three previous microlensed dwarf stars OGLE-2006-BLG-265S, MOA-2006-BLG-099S, and OGLE-2007-BLG-349S with the same method. This homogeneous data set, although small, enables a direct comparison between the different stellar populations.

Keywords

1. gravitational-lensing
2. chemical-abundances
3. line-intensities

Bibliographic source Bibcode

2009A&A...499..737B

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https://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/499/737

IVOA Identifier IVOID

ivo://CDS.VizieR/J/A+A/499/737

Document Object Identifer DOI

doi:10.26093/cds/vizier.34990737

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