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Subaru Seminars are
usually held in Room 104 of the Hilo Base Facility, adjacent
to the main lobby. Everyone is welcome to attend. If you would like to
give a seminar, please contact Subaru seminar organizers
(Rusu Cristian Eduard, Tae-Soo Pyo, Nagayoshi Ohashi)
by email : sseminar_at_subaru.naoj.org (please change"_at" to @).
February 7, Tuesday, 11am in 104A
" Time-domain and gravitational lensing studies -- from Milky Way, Andromeda, to galaxies afar "
Dr. Chien-Hsiu Lee (Subaru Telescope)
The advent of ultra-wide cameras and all-sky surveys have greatly facilitated time-domain and gravitational lensing studies. In this talk, I will showcase how we can make use of these public surveys, especially using eclipsing binaries to constrain the stellar parameters and structures in the Milky Way, as well as utilizing microlensing to probe exoplanets in the solar neighborhood. I will then move on to our closest neighbor spiral galaxy, i.e. M31, to demonstrate how we can use different variables to determine its properties, e.g. distance, metallicity gradient, star formation process, as well as using microlensing to investigate the compact object in the halo of M31. In the end, I will discuss how joining the forces of time-domain and gravitational lensing can improve our knowledge of cosmology, especially in the lights of time-delays from multiply lensed SNe Ia.