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Microlensing Surveys and Long Period Variables

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Marie-Odile Mennessier

CNRS and Univ. Montpellier II

Place Eug�ne Bataillon

F34095 Montpellier, France

Presented at the AAVSO Session on Mira Stars (part of the 85th Annual Meeting), November 1, 1996

Abstract

After briefly recalling how microlensing surveys can greatly help research on Long Period Variable stars (LPVs), I present examples from two research projects, Etude et Recherche d'Objets Sombres (EROS) and DUO, and give some examples of preliminary data. This paper is essentially based on the theses of P. Grison (Institute d'Astrophysique [IAP], Paris), J.P. Beaulieu (IAP, Paris), C. Alard (Centre d'Analyse d'Images, Paris), and on the Diplome d'Etudes Approfondies of Y. Audior (IAP, Paris).