A search for transiting planets around hot subdwarfs: I. Methods and performance tests on light curves from Kepler, K2, TESS, and CHEOPS
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Abstract
Context. Hot subdwarfs experienced strong mass loss on the Red Giant Branch
(RGB) and are now hot and small He-burning objects. Aims. In this project we
aim to perform a transit survey in all available light curves of hot subdwarfs
from space-based telescopes (Kepler, K2, TESS, and CHEOPS), with our
custom-made pipeline SHERLOCK, in order to determine the occurrence rate of
planets around these stars, as a function of orbital period and planetary
radius. Methods. In this first paper, we perform injection-and-recovery tests
of synthetic transits for a selection of representative Kepler, K2 and TESS
light curves, to determine which transiting bodies, in terms of object radius
and orbital period, we will be able to detect with our tools. We also provide
such estimates for CHEOPS data, which we analyze with the pycheops package.
Results. Transiting objects with a radius
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1432-0746