First detection of a gravitational microlensing candidate towards the Small Magellanic Cloud

Details First detection of a gravitational microlensing candidate towards the Small Magellanic Cloud First detection of a gravitational microlensing candidate towards the Small Magellanic Cloud

1997-08-20

arxiv.org/abs/astro-ph/9708190v2

Astrophys.J. 491 (1997) L11

Astronomy and Astrophysics

Astrophysics

5 pages, Latex, 2 postscript figures, Published in: ApJ Lett. 491, L11, 1997

Scientific paper

10.1086/311053

We report the first discovery of a gravitational microlensing candidate towards a new population of source stars, the Small Magellanic Cloud (SMC). The candidate event's light curve shows no variation for 3 years before an upward excursion lasting $ \sim 217$ days that peaks around January 11, 1997 at a magnification of $ \sim 2.1$. Microlensing events towards the Large Magellanic Cloud and the Galactic bulge have allowed important conclusions to be reached on the stellar and dark matter content of the Milky Way. The SMC gives a new line-of-sight through the Milky Way, and is expected to prove useful in determining the flattening of the Galactic halo.

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