Van Grootel, V.; Pozuelos, F. J.; Thuillier, A.; Charpinet, S.; Delrez, L.; Beck, M.; Fortier, A.; Hoyer, S.; Sousa, S. G.; Barlow, B. N.; Billot, N.; Dévora-Pajares, M.; Østensen, R. H.; Alibert, Y.; Alonso, R.; Anglada Escudé, G.; Asquier, J.; Barrado, D.; Barros, S. C. C.; Baumjohann, W.; ... (2021). A search for transiting planets around hot subdwarfs. Astronomy and astrophysics, 650(A205), A205. EDP Sciences 10.1051/0004-6361/202140381
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Context. Hot subdwarfs experienced strong mass loss on the red giant branch (RGB) and are now hot and small He-burning objects. These stars constitute excellent opportunities for addressing the question of the evolution of exoplanetary systems directly after the RGB phase of evolution.
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. We also aim to determine whether planets that were previously engulfed in the envelope of their red giant host star can survive, even partially, as a planetary remnant.
Methods. For this first paper, we performed 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 estimates for CHEOPS data, which we analyzed with the pycheops package.
Results. Transiting objects with a radius
Item Type: |
Journal Article (Original Article) |
|---|---|
Division/Institute: |
08 Faculty of Science > Physics Institute > Space Research and Planetary Sciences 08 Faculty of Science > Physics Institute 10 Strategic Research Centers > Center for Space and Habitability (CSH) 08 Faculty of Science > Physics Institute > NCCR PlanetS |
UniBE Contributor: |
Fortier, A., Alibert, Yann Daniel Pierre, Beck, Thomas, Benz, Willy, Broeg, Christopher, Demory, Brice-Olivier Denys, Heng, Kevin, Thomas, Nicolas |
Subjects: |
500 Science > 520 Astronomy 600 Technology > 620 Engineering |
ISSN: |
0004-6361 |
Publisher: |
EDP Sciences |
Language: |
English |
Submitter: |
Dora Ursula Zimmerer |
Date Deposited: |
10 Mar 2022 15:15 |
Last Modified: |
02 Mar 2023 23:35 |
Publisher DOI: |
10.1051/0004-6361/202140381 |
BORIS DOI: |
10.48350/165961 |
URI: |
https://boris.unibe.ch/id/eprint/165961 |
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