SIMBAD references

2018AJ....155..154M - Astron. J., 155, 154-154 (2018/April-0)

New self-lensing models of the Small Magellanic Cloud: can gravitational microlensing detect extragalactic exoplanets?

MROZ P. and POLESKI R.

Abstract (from CDS):

We use three-dimensional distributions of classical Cepheids and RR Lyrae stars in the Small Magellanic Cloud (SMC) to model the stellar density distribution of a young and old stellar population in that galaxy. We use these models to estimate the microlensing self-lensing optical depth to the SMC, which is in excellent agreement with the observations. Our models are consistent with the total stellar mass of the SMC of about 1.0×109M under the assumption that all microlensing events toward this galaxy are caused by self-lensing. We also calculate the expected event rates and estimate that future large-scale surveys, like the Large Synoptic Survey Telescope (LSST), will be able to detect up to a few dozen microlensing events in the SMC annually. If the planet frequency in the SMC is similar to that in the Milky Way, a few extragalactic planets can be detected over the course of the LSST survey, provided significant changes in the SMC observing strategy are devised. A relatively small investment of LSST resources can give us a unique probe of the population of extragalactic exoplanets.

Abstract Copyright: © 2018. The American Astronomical Society. All rights reserved.

Journal keyword(s): gravitational lensing: micro - Magellanic Clouds - planets and satellites: detection

Simbad objects: 6

goto Full paper

goto View the reference in ADS

To bookmark this query, right click on this link: simbad:2018AJ....155..154M and select 'bookmark this link' or equivalent in the popup menu


2019.12.12-13:21:59

© Université de Strasbourg/CNRS

    • Contact