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Paper: Variable Stars from Two Surveys of Microlensing in M31
Volume: 310, Variable Stars in the Local Group (IAU Colloquium 193)
Page: 83
Authors: Crotts, A.P.S.; Boyle, R.P.; Corbally, C.J.; Mega Collaboration, The
Abstract: Recently we completed the VATT/Columbia survey monitoring a portion of M31 for microlensing and stellar variability, and report here on the microlensing result. Also, we have nearly completed a much larger survey (MEGA) covering most of the stars in M31, for which we have started cataloging many tens of thousands of Cepheids, Miras, eclipsing variables and other kinds of variable stars The microlensing results from these two surveys hint that a significant fraction of the dark matter in M31 is composed of stellar-mass objects in the halo.
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