AgapeZ1: a Large Amplification Microlensing Event or an Odd Variable Star Towards the Inner Bulge of M31

R. Ansari , M. Auriere , P. Baillon , A. Bouquet , G. Coupinot , Ch. Coutures , C. Ghesquiere , Y. Giraud-Heraud

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P. Gondolo J. Hecquet J. Kaplan A. Kim Y. Le Du A.L. Melchior M. Moniez J.P. Picat G. Soucail

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classification 🌌 astro-ph

keywords eventagapez1durationmagnitudemicrolensingstaragapeamplification

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AgapeZ1 is the brightest and the shortest duration microlensing candidate event found in the Agape data. It occured only 42" from the center of M31. Our photometry shows that the half intensity duration of the event6 is 4.8 days and at maximum brightness we measure a stellar magnitude of R=18.0 with B-R=0.80 mag color. A search on HST archives produced a single resolved star within the projected event position error box. Its magnitude is R=22.

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AgapeZ1: a Large Amplification Microlensing Event or an Odd Variable Star Towards the Inner Bulge of M31

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