The Optical Depth to Microlensing of the Galactic Bulge Stars

Astronomy and Astrophysics – Astronomy

Scientific paper

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Gravitational Lensing, Galaxy: Stellar Content, Galaxy: Structure

Scientific paper

The maps of optical depth to gravitational microlensing are presented for a classic model of the Galaxy. Also shown are the microlensing maps for a model with the Galactic Bulge shaped as a bar elongated along the line of sight. In the latter model the optical depth to microlensing by the disk and the bar stars is tau approx 2 times 10^{-6} in the Baade's Window. It is consistent with the lower limit obtained with the OGLE data.

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