Examining stellar atmospheres via microlensing

Details Examining stellar atmospheres via microlensing Examining stellar atmospheres via microlensing

Mar 2004

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004an....325..247t&link_type=abstract

Astronomische Nachrichten, Vol.325, Issue 3, p.247-247

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Scientific paper

Resolving stellar atmospheres of stars other than the Sun has proven very tedious and only possible for the nearest and largest stars. microlensing offers a solution by providing a ``natural'' telescope.
Binary lenses create extended caustic lines in the magnification pattern. As the source star crosses such a caustic, its light curve not only shows a strong peak of distinctive shape, but its surface also experiences a substantial differential magnification and is therefore spatially resolved. As suggested by \cite{schneider, heyrov, heyrov00, hendry, bryce, fields} microlensing gives us the opportunity to examine the atmospheres of stars and to test stellar models against observations.

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