Validation of selected TESS exoplanetary candidates

J 2024

Validation of selected TESS exoplanetary candidates

MESARČ, Marko a Ľubomír HAMBÁLEK

Základní údaje

Originální název

Validation of selected TESS exoplanetary candidates

Autoři

MESARČ, Marko (703 Slovensko, domácí) a Ľubomír HAMBÁLEK (703 Slovensko)

Vydání

Contributions of the Astronomical Observatory Skalnaté Pleso, Astronomical Institute, Slovak Academy of Sciences, 2024, 1335-1842

Další údaje

Jazyk

angličtina

Typ výsledku

Článek v odborném periodiku

Obor

10308 Astronomy

Stát vydavatele

Slovensko

Utajení

není předmětem státního či obchodního tajemství

Odkazy

URL

Impakt faktor

Impact factor: 0.500 v roce 2022

Organizační jednotka

Přírodovědecká fakulta

DOI

http://dx.doi.org/10.31577/caosp.2024.54.2.219

UT WoS

001178776600007

Klíčová slova anglicky

Planetary systems; Binaries: eclipsing; Techniques: photometric

Štítky

rivok

Příznaky

Mezinárodní význam, Recenzováno

Změněno: 9. 4. 2024 14:52, Mgr. Marie Šípková, DiS.

Anotace

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.

Citovat

MESARČ, Marko a Ľubomír HAMBÁLEK. Validation of selected TESS exoplanetary candidates. Contributions of the Astronomical Observatory Skalnaté Pleso. Astronomical Institute, Slovak Academy of Sciences, 2024, roč. 54, č. 2, s. 219-227. ISSN 1335-1842. Dostupné z: https://dx.doi.org/10.31577/caosp.2024.54.2.219.

@article{2388957,
   author = {Mesarč, Marko and Hambálek, Ľubomír},
   article_number = {2},
   doi = {http://dx.doi.org/10.31577/caosp.2024.54.2.219},
   keywords = {Planetary systems; Binaries: eclipsing; Techniques: photometric},
   language = {eng},
   issn = {1335-1842},
   journal = {Contributions of the Astronomical Observatory Skalnaté Pleso},
   title = {Validation of selected TESS exoplanetary candidates},
   url = {https://www.astro.sk/caosp/Eedition/FullTexts/vol54no2/pp219-227.pdf},
   volume = {54},
   year = {2024}
}

TY  - JOUR
ID  - 2388957
AU  - Mesarč, Marko - Hambálek, Ľubomír
PY  - 2024
TI  - Validation of selected TESS exoplanetary candidates
JF  - Contributions of the Astronomical Observatory Skalnaté Pleso
VL  - 54
IS  - 2
SP  - 219-227
EP  - 219-227
PB  - Astronomical Institute, Slovak Academy of Sciences
SN  - 13351842
KW  - Planetary systems
KW  - Binaries: eclipsing
KW  - Techniques: photometric
UR  - https://www.astro.sk/caosp/Eedition/FullTexts/vol54no2/pp219-227.pdf
N2  - 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.
ER  -

MESARČ, Marko a Ľubomír HAMBÁLEK. Validation of selected TESS exoplanetary candidates. \textit{Contributions of the Astronomical Observatory Skalnaté Pleso}. Astronomical Institute, Slovak Academy of Sciences, 2024, roč.~54, č.~2, s.~219-227. ISSN~1335-1842. Dostupné z: https://dx.doi.org/10.31577/caosp.2024.54.2.219.

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