Gravitational microlensing as a test of a finite-width disk model of the   Galaxy
  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 $0<R<R0$ 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. 
Szymon Sikora, {\L}ukasz Bratek, Joanna Ja{\l}ocha, Marek Kutschera
astro-ph.GA