Volume 546, October 2012
|Number of page(s)||9|
|Section||Galactic structure, stellar clusters and populations|
|Published online||18 October 2012|
Gravitational microlensing as a test of a finite-width disk model of the Galaxy
Institute of Physics, Jagellonian University,
2 Institute of Nuclear Physics, Polish Academy of Sciences, Radzikowskego 152, 31342 Kraków, Poland
Accepted: 21 August 2012
The aim of this work is to show, in the framework of a simple finite-width disk model, that the amount of mass seen through gravitational microlensing measurements in the region 0 < R < R° is consistent with the dynamical mass ascertained from Galaxy rotation after subtracting gas contribution. Since microlensing only detects compact objects, this result suggests that a non-baryonic mass component may be negligible in this region.
Key words: gravitational lensing: micro / Galaxy: bulge / Galaxy: disk / Galaxy: structure / dark matter
© ESO, 2012
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