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Astrophysics Luncheon Seminar

A Southern Hemisphere RV Follow-up Program for TESS with PFS/Magellan II
Presented by Johanna Teske
Department of Terrestrial Magnetism, Carnegie Institution of Washington

Monday, July 8, 2019
12:00 noon in 169-336

Abstract
With the launch in spring 2018 of the Transiting Exoplanet Survey Satellite (TESS), a new phase of exoplanet detection, follow-up, and characterization began. In this talk, I will describe the motivation and methodology behind a ground-based radial velocity survey with PFS/Magellan II that I am leading to study small transiting planets detected by TESS. This survey, combining several different observational techniques, is designed to investigate whether super-Earth (~1-1.6 Earth radii) and sub-Neptune (~2-3 Earth radii) planets formed in the same way but were sculpted by post-formation processes and so appear different now, or formed differently from the start. We are incorporating statistically-motivated choices for target selection and observation cadencing, and using multiple RV analysis methods combined with photometric data, to measure the masses of ~30 new small planets. Our aim is to double the number of well-characterized small planets known at the start of TESS, while creating an unbiased sample for better constraining the small end of the mass-radius relation.

JPL Contact: Karl Stapelfeldt (4-9608)


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