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Detecting solar-like oscillators with TESS

Martin B. Nielsen
School of Physics and Astronomy, University of Birmingham, UK

Current and future space-based observatories such as the Transiting Exoplanet Survey Satellite (TESS) and PLATO are set to provide an enormous amount of new data on oscillating stars, and in particular stars that oscillate like the Sun. Asteroseismic analysis of solar-like oscillators is a valuable tool for understanding not only stellar physics, but also potential orbiting exoplanets, and in a wider context, the Milky Way itself. Here we present a probabilistic algorithm for automatically determining if a given time series of photometric measurements shows evidence of solar-like oscillations. We apply this new algorithm to over 250,000 TESS light curves and report the detection of 4,275 solar-like oscillators. The catalog spans a wide range of the HR diagram, extending from the red giant branch, towards the main sequence and importantly populating the subgiant regime. These detections show the value of the TESS mission in improving our understanding of stars and their environments through a range of evolutionary phases, as well as helping us prepare for the upcoming PLATO mission.

2022 April 13, 15:30

Online broadcast (Zoom)

Faculdade de Ciências da Universidade de Lisboa Universidade do Porto Faculdade de Ciências e Tecnologia da Universidade de Coimbra
Fundação para a Ciência e a Tecnologia COMPETE 2020 PORTUGAL 2020 União Europeia