Galactic Bulge microlensing optical depth from EROS-2
/ Authors
C. Hamadache, L. Guillou, P. Tisserand, C. Afonso, J. Albert, J. Andersen, R. Ansari, E. Aubourg, P. Bareyre, J. Beaulieu
and 30 more authors
X. Charlot, C. Coutures, C. Coutures, R. Ferlet, P. Fouqu'e, J. Glicenstein, B. Goldman, A. Gould, D. Graff, M. Gros, J. Haissinski, J. Kat, É. Lesquoy, É. Lesquoy, C. Loup, C. Magneville, J. Marquette, E. Maurice, A. Maury, A. Milsztajn, M. Moniez, N. Palanque-Delabrouille, O. Perdereau, Y. Rahal, J. Rich, M. Spiro, A. Vidal-Madjar, L. Vigroux, L. Vigroux, S. Zylberajch
/ Abstract
We present a new EROS-2 measurement of the microlensing optical depth toward the Galactic Bulge. Light curves of $5.6\times 10^{6}$ clump-giant stars distributed over $66 \deg^2$ of the Bulge were monitored during seven Bulge seasons. 120 events were found with apparent amplifications greater than 1.6 and Einstein radius crossing times in the range $5 {\rm d}
Journal: Astronomy and Astrophysics