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Issue A&A Volume 394, Number 3, November II 2002 Page(s) L47 - L50 Section Letters DOI 10.1051/0004-6361:20021409

A&A 394, L47-L50 (2002)
DOI: 10.1051/0004-6361:20021409

Letter

Microlensing of strongly interacting binary systems

V. Bozza^{1, 2} and L. Mancini<sup>1, 3, 2

1</sup>  Dipartimento di Fisica "E.R. Caianiello", Università di Salerno, 84081 Baronissi (SA), Italy
²  Istituto Nazionale di Fisica Nucleare, sez. Napoli, Italy
³  Institut für Theoretische Physik der Universität Zürich, 8057 Zürich, Switzerland

(Received 5 September 2002 / Accepted 24 September 2002 )

Abstract
Many binary systems are in a state of strong interaction, where mass exchanges, accretion disks, common envelopes provide circumstellar matter which can have significant effects in microlensing light curves of background sources. Such chromatic absorption effects provide very interesting information on the nature of this diffuse matter and the physics of the interaction between the two stars.

Key words: gravitational lensing -- binaries: close -- circumstellar matter

Offprint request: V. Bozza, valboz@sa.infn.it

© ESO 2002

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