Photometric Analysis and Transit Times of TRAPPIST-1 b and c
Morris, Brett M. · Agol, Eric · Hawley, Suzanne L.
Original · EN
TRAPPIST-1 hosts seven Earth-sized planets transiting an M8 star. We observed mid-transit times of each of the inner two planets with the Astrophysical Research Consortium (ARC) 3.5 m Telescope at Apache Point Observatory (APO) to help constrain the planet masses with transit timing variations, and we outline a procedure for analyzing transit observations of late-M stars with APO. The transit times of TRAPPIST-1 b and c are BJDTDB = 2457580.87634⁺⁰.⁰⁰⁰³⁴₋₀.₀₀₀₃₄ and 2457558.89477⁺⁰.⁰⁰⁰⁸⁰₋₀.₀₀₀₈₅, respectively, which will help constrain the planet masses.
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