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Igor Soszynski (Warsaw)

One Million Variable Stars from the OGLE Survey
When Jan 18, 2018 from 02:30 PM to 03:30 PM
What
  • Colloquium
Where SH Lecture Hall
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The Optical Gravitational Lensing Experiment (OGLE) is one of the world's largest optical surveys devoted to searching for variability in the sky. In the last year, the project celebrated its 25th anniversary. During its long history, the OGLE survey collected about one trillion individual photometric measurements for more than one billion stars in the Milky Way and in nearby galaxies. These data has led to many discoveries in various fields of astronomy: gravitational lensing and microlensing, extrasolar planets, cosmic distance scale, structure of galaxies, Kuiper belt objects, etc. Variable stars occupy a special position among the most important achievements of the survey. The OGLE Collection of Variable Stars currently contains nearly one million objects of various types and this is the largest set of variable stars ever obtained by any astronomical project. I will present the most spectacular OGLE discoveries in the field of variable stars.