Kinematics of LMC stellar populations and self-lensing optical depth

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dc.creatorSalati, P.
dc.creatorTaillet, R.
dc.creatorAubourg, E.
dc.creatorPalanque-Delabrouille, N.
dc.creatorSpiro, M.
dc.date1999-04-28
dc.date1999-09-27
dc.date.accessioned2026-07-07T02:31:26Z
dc.date.available2026-07-07T02:31:26Z
dc.descriptionRecent observations give some clues that the lenses discovered by the microlensing experiments in the direction of the Magellanic Clouds may be located in these satellite galaxies. We re-examine the possibility that self-lensing alone may account for the optical depth measured towards the Large Magellanic Cloud (LMC). We present a self-consistent multi-component model of the LMC consisting of distinct stellar populations, each associated to a vertical velocity dispersion ranging from 10 to 60 km/s. The present work focuses on showing that such dispersions comply with current 20 - 30 km/s limits set by observation on specific LMC populations. We also show that this model reproduces both the 1-2 10^-7 observed optical depth and the event duration distribution.
dc.description5 pages, 3 figures. Major revision of the article to include a better comparison to existing data and therefore the study of a different and better defined subset of stars (Red Clump). Accepted for publication in A&A Letters
dc.identifierhttps://arxiv.org/abs/astro-ph/9904400
dc.identifierhttp://arxiv.org/abs/astro-ph/9904400
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/14149
dc.subjectAstrophysics
dc.titleKinematics of LMC stellar populations and self-lensing optical depth
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