Bonn 2020 – wissenschaftliches Programm

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EP: Fachverband Extraterrestrische Physik

EP 3: Poster session

EP 3.9: Poster

Dienstag, 31. März 2020, 16:30–18:30, Zelt

Hunting TESS Single Transits — •Jana Steuer1,2, Frank Grupp1,2, Arno Riffeser1,2, Hanna Kellermann1,2, Ralf Bender1,2, and Roberto Saglia1,21University Observatory Munich (USM) — 2Max Planck Institute for Extraterrestrial Physics, Munich

NASA's TESS satellite is monitoring stellar flux of mostly G, K and M dwarfs in search for transiting exoplanet signals in 26 sectors, each observed for roughly 27 days and overall covering about 85% of the entire sky. The number of confirmed exoplanets is expected to be increased dramatically by TESS, a successor to the highly successful Kepler and K2 missions. Ideally, a detected signal is recorded multiple times, thus indicating a period for the stellar companion. However, since many planets detectable by TESS will have periods exceeding 27 days, their signals only have a chance to be detected once, given that they are not positioned within an overlapping sector region. Ignoring these candidates would mean the loss of a huge number of most likely very interesting planets, orbiting at distances large enough to potentially be positioned within the habitable zone.

Our effort aims to find these single detections within the TESS data, infer a period by performing MCMC fitting and following up these signals with ground based radial velocity measurements and, if sensible, photometry observations with the Wendelstein 2.1 m telescope and possibly others to confirm or discard them as planets.

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