Skip to main content

Research Repository

Advanced Search

Resolving period aliases for TESS monotransits recovered during the extended mission

Resolving period aliases for TESS monotransits recovered during the extended mission Thumbnail


Abstract

We set out to explore how best to mitigate the number of period aliases for a transiting Transiting Exoplanet Survey Satellite (TESS) system with two identified transits separated by a large time period on the order of years. We simulate a realistic population of doubly transiting planets based on the observing strategy of the TESS primary and extended missions. We next simulate additional observations using photometry (NGTS) and spectroscopy (HARPS and CORALIE) and assess its impact on the period aliases of systems with two TESS transits. We find that TESS will detect around 400 exoplanets that exhibit one transit in each of the primary and extended missions. Based on the temporal coverage, each of these systems will have an average of 38 period aliases. We find that, assuming a combination of NGTS and CORALIE over observing campaigns spanning 50 d, we can find the true alias, and thus solve the period, for up to 207 of these systems with even more being solved if the observing campaigns are extended or we upgrade to HARPS over CORALIE.

Citation

(2021). Resolving period aliases for TESS monotransits recovered during the extended mission. Monthly Notices of the Royal Astronomical Society, 5088 - 5097. https://doi.org/10.1093/mnras/staa3569

Acceptance Date Nov 9, 2020
Publication Date Feb 1, 2021
Journal Monthly Notices of the Royal Astronomical Society
Print ISSN 0035-8711
Publisher Oxford University Press
Pages 5088 - 5097
DOI https://doi.org/10.1093/mnras/staa3569
Publisher URL https://academic.oup.com/mnras/article/500/4/5088/5989728

Files






Downloadable Citations