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Evidence for Halo Microlensing from a Survey of M31

Published online by Cambridge University Press:  26 May 2016

Arlin P. S. Crotts ,
Robert R. Uglesich ,
Edward A. Baltz ,
Jelte de Jong ,
Richard P. Boyle  and
Christopher J. Corbally
Arlin P. S. Crotts
Affiliation:
C.A.L., Columbia U., 550 W. 120th St., New York, NY 10027, U.S.A.
Robert R. Uglesich
Affiliation:
C.A.L., Columbia U., 550 W. 120th St., New York, NY 10027, U.S.A.
Edward A. Baltz
Affiliation:
C.A.L., Columbia U., 550 W. 120th St., New York, NY 10027, U.S.A.
Jelte de Jong
Affiliation:
Kapteyn Astron. Inst., Postbus 800, Groningen 9700 AV, Netherlands
Richard P. Boyle
Affiliation:
Vatican Obs. Research Group, U. of Arizona, Tucson, AZ 85721, U.S.A.
Christopher J. Corbally
Affiliation:
Vatican Obs. Research Group, U. of Arizona, Tucson, AZ 85721, U.S.A.

Abstract

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We report on the final microlensing result from one survey (VATT/Columbia) monitoring stars in M31, and the initial results of a larger study (MEGA), which together seem to indicate the presence of a microlensing halo component comprising a significant fraction of the dark matter in M31.

Type
Part 4: Lensing
Information
Symposium - International Astronomical Union , Volume 220: Dark Matter in Galaxies , 2004 , pp. 121 - 126
Copyright
Copyright © Astronomical Society of the Pacific 2004 

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