C.D.S. - SIMBAD4 rel 1.7 - 2021.06.20CEST20:27:33

2003A&A...412...81R - Astronomy and Astrophysics, volume 412, 81-90 (2003/12-2)

Study of a strategy for parallax microlensing detection towards the Magellanic Clouds.


Abstract (from CDS):

In this article, we have investigated the possibility to distinguish between different galactic models through microlensing parallax studies. We show that a systematic search for parallax effects can be done using the currently running alert systems and complementary photometric telescopes, to distinguish between different lens distance distributions. We have considered two galactic dark compact object distributions, with total optical depths corresponding to the EROS current upper limits. These models correspond to two extreme hypotheses on a three component galactic structure made of a thin disk, a thick disk, and a spherically symmetric halo. Our study shows that for sub-solar mass lenses, an exposure of 8x107star*yr toward the LMC should allow one to distinguish between these two extreme models. In addition, the self-lensing hypothesis (lensing by LMC objects) can efficiently be tested through the method proposed here.

Abstract Copyright:

Journal keyword(s): Galaxy: kinematics and dynamics - Galaxy: disk - Galaxy: halo - Galaxy: structure - cosmology: dark matter - gravitational lensing

Simbad objects: 3

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Number of rows : 3

N Identifier Otype ICRS (J2000)
ICRS (J2000)
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2021
1 NAME SMC G 00 52 38.0 -72 48 01   2.79 2.2     ~ 9841 1
2 NAME Magellanic Clouds GrG 03 00 -71.0           ~ 5984 1
3 NAME LMC G 05 23 34.6 -69 45 22     0.4     ~ 15432 1

    Equat.    Gal    SGal    Ecl

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