Uncovering the stellar impact on planetary systems through population demographics

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• Ed Bryant (UCL)
• Tuesday 04 February 2025, 13:00-14:00
• Ryle seminar room + ONLINE - Details to be sent by email.

If you have a question about this talk, please contact Dr Dolev Bashi.

Host stars play a huge role in shaping the planetary systems they host, both through their evolution and through the influence they have over planet formation. While the exact processes through which stars influence their planetary systems remain unclear, these processes are all expected to imprint signatures on the overall population of planets that exist throughout the galaxy. The all sky coverage of the TESS mission provides enables us to study these populations and uncover the influence of the star. In this talk I will discuss how I use the TESS Full-Frame-Image light curves to measure the occurrence rates of different planets and planetary systems, and what these occurrence rates can teach us about the impact of the host star on planet formation and evolution. In particular I will present the results from studying two populations. The first is the population of giant planets around low-mass stars, through which we can probe an extreme of giant planet formation. The second is the population of giant planets around post-main sequence stars. By studying this population we can better understand the impact of the early stages of post-main sequence stellar evolution on close-in planets, including strong tidal interactions and rapid orbital decay.

This talk is part of the Exoplanet Seminars series.

This talk is included in these lists:

• Cambridge Astronomy Talks
• Combined External Astrophysics Talks DAMTP
• Cosmology, Astrophysics and General Relativity
• Exoplanet Seminars
• Institute of Astronomy Talk Lists
• LCLU Departmental Talks
• Ryle seminar room + ONLINE - Details to be sent by email

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