MESARČ, Marko and Ľubomír HAMBÁLEK. Validation of selected TESS exoplanetary candidates. Contributions of the Astronomical Observatory Skalnaté Pleso. Astronomical Institute, Slovak Academy of Sciences, 2024, vol. 54, No 2, p. 219-227. ISSN 1335-1842. Available from: https://dx.doi.org/10.31577/caosp.2024.54.2.219.
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Basic information
Original name Validation of selected TESS exoplanetary candidates
Authors MESARČ, Marko (703 Slovakia, belonging to the institution) and Ľubomír HAMBÁLEK (703 Slovakia).
Edition Contributions of the Astronomical Observatory Skalnaté Pleso, Astronomical Institute, Slovak Academy of Sciences, 2024, 1335-1842.
Other information
Original language English
Type of outcome Article in a journal
Field of Study 10308 Astronomy
Country of publisher Slovakia
Confidentiality degree is not subject to a state or trade secret
WWW URL
Impact factor Impact factor: 0.500 in 2022
Organization unit Faculty of Science
Doi http://dx.doi.org/10.31577/caosp.2024.54.2.219
UT WoS 001178776600007
Keywords in English Planetary systems; Binaries: eclipsing; Techniques: photometric
Tags rivok
Tags International impact, Reviewed
Changed by Changed by: Mgr. Marie Šípková, DiS., učo 437722. Changed: 9/4/2024 14:52.
Abstract
We have selected suitable 6 exoplanetary candidates from the TESS database which were observable using a network of small ground-based telescopes to collect photometric transits during follow-up observation. We have made a new reduction of TESS photometry using a custom aperture, as well as reducing the ground-based aperture photometry. We have refined the period of transits and constructed O - C diagrams. Mean transit was fitted in all observed photometric filters and we derived individual candidate's physical parameters. Using the colour indices during transit, we hint at the exoplanetary nature of candidates. Three targets TOI-1518b, TOI-2046b, and TOI-2109b were confirmed as exoplanets by other authors during the writing of this thesis. Here, we have provided an independent evaluation and analysis, without any knowledge of their results. TOI-3856.01 is among the targets more likely a substellar object based on my results, but it has not been confirmed yet. In the case of TOI-1834.01, we have proposed another scenario incompatible with the original assumption that it was an exoplanetary candidate and we assume that it is a hierarchical triple system. TOI-3604.01 was also modelled concerning parasitic light in the aperture. Individual models suggest a body too large for an exoplanet.
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