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Stellar Astrophysics Centre at the University of Aarhus

TESS reveals an improbable planet

29 Oct 2019, 08:11 UTC
TESS reveals an improbable planet NASA

Surprise: An exoplanet shouldn't have survived the expansion of it's red giant star, but still it is there.

Using asteroseismic1 data from NASA’s Transiting Exoplanet Survey Satellite (TESS), an international team2, led by Instituto de Astrofísica e Ciências do Espaço (IA3) researcher Tiago Campante, studied the red-giant stars HD 212771 and HD 203949. These are the first detections of oscillations in previously known exoplanet-host stars by TESS. The result was published 29 October 2019 in an article4 in The Astrophysical Journal.

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