J 2024

Validation of selected TESS exoplanetary candidates

MESARČ, Marko and Ľubomír HAMBÁLEK

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

Language

English

Type of outcome

Článek v odborném periodiku

Field of Study

10308 Astronomy

Country of publisher

Slovakia

Confidentiality degree

není předmětem státního či obchodního tajemství

References:

Impact factor

Impact factor: 0.500 in 2022

Organization unit

Faculty of Science

DOI

UT WoS

001178776600007

Keywords in English

Planetary systems; Binaries: eclipsing; Techniques: photometric

Tags

Tags

International impact, Reviewed
Změněno: 9/4/2024 14:52, Mgr. Marie Šípková, DiS.

Abstract

V originále

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.