1999/04/28 by P. Salati, R. Taillet, Salati, P. +9
Engineering · Physics and Astronomy · #Advanced Measurement and Metrology Techniques #Astronomy and Astrophysical Research #Astrophysics (astro-ph) #FOS: Physical sciences #astro-ph
paper · pdf · doi:10.48550/arxiv.astro-ph/9904400
5 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
openalex publication_date 1999/04/28 · arxiv created 1999/09/27 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
Recent 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.