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VaTEST. II. Statistical Validation of 11 TESS-detected Exoplanets Orbiting K-type Stars

by Lester, Kathryn , Ghachoui, Mourad , Srdoc, Gregor , Murgas, Felipe , Schwarz, Richard P , Pathak, Kamlesh , Giacalone, Steven , Abe, Lyu , Collins, Kevin I , Ziegler, Carl , Maity, Mousam , Goliguzova, Maria V , Matson, Rachel , Strakhov, Ivan A , Matthews, Elisabeth C , Timmermans, Mathilde , Barkaoui, Khalid , Collins, Karen A , Gnilka, Crystal , Gillon, Michaël , Tan, Thiam-Guan , Benkhaldoun, Zouhair , Guillot, Tristan , Mistry, Priyashkumar , Dressing, Courtney , Gharat, Sarvesh , Scott, Nic , Lekkas, Georgios , Narita, Norio , Kumar, Dhruv , Soubkiou, Abderahmane , Suarez, Olga , Mann, Christopher R , Howell, Steve B , Hełminiak, Krzysztof G , Ciardi, David , Littlefield, Colin , Bendjoya, Philippe , Crossfield, Ian , Prasad, Aniket , Bieryla, Allyson , Bhattarai, Surendra , Gonzales, Erica , Jehin, Emmanuel , Palle, Enric , Schlieder, Joshua E , Pozuelos, Francisco J , Furlan, Elise , Fukui, Akihiko , Triaud, Amaury H. M. J , Evans, Phil

in Emission spectroscopy / Extrasolar planets / Iron / K stars / Light curve / Metallicity / Neptune / Planet detection / Planetary orbits / Planets / Sky surveys (astronomy) / Software / Spectroscopy / Spectrum analysis / Stars / Transit

2023

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VaTEST. II. Statistical Validation of 11 TESS-detected Exoplanets Orbiting K-type Stars

2023

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VaTEST. II. Statistical Validation of 11 TESS-detected Exoplanets Orbiting K-type Stars

2023

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Journal Article

VaTEST. II. Statistical Validation of 11 TESS-detected Exoplanets Orbiting K-type Stars

Lester, Kathryn,

Ghachoui, Mourad,

Srdoc, Gregor,

Murgas, Felipe,

Schwarz, Richard P,

Pathak, Kamlesh,

Giacalone, Steven,

Abe, Lyu,

Collins, Kevin I,

Ziegler, Carl,

Maity, Mousam,

Goliguzova, Maria V,

Matson, Rachel,

Strakhov, Ivan A,

Matthews, Elisabeth C,

Timmermans, Mathilde,

Barkaoui, Khalid,

Collins, Karen A,

Gnilka, Crystal,

Gillon, Michaël,

Tan, Thiam-Guan,

Benkhaldoun, Zouhair,

Guillot, Tristan,

Mistry, Priyashkumar,

Dressing, Courtney,

Gharat, Sarvesh,

Scott, Nic,

Lekkas, Georgios,

Narita, Norio,

Kumar, Dhruv,

Soubkiou, Abderahmane,

Suarez, Olga,

Mann, Christopher R,

Howell, Steve B,

Hełminiak, Krzysztof G,

Ciardi, David,

Littlefield, Colin,

Bendjoya, Philippe,

Crossfield, Ian,

Prasad, Aniket,

Bieryla, Allyson,

Bhattarai, Surendra,

Gonzales, Erica,

Jehin, Emmanuel,

Palle, Enric,

Schlieder, Joshua E,

Pozuelos, Francisco J,

Furlan, Elise,

Fukui, Akihiko,

Triaud, Amaury H. M. J,

Evans, Phil

2023

Overview

NASA’s Transiting Exoplanet Survey Satellite (TESS) is an all-sky survey mission designed to find transiting exoplanets orbiting nearby bright stars. It has identified more than 329 transiting exoplanets, and almost 6000 candidates remain unvalidated. In this manuscript, we discuss the findings from the ongoing Validation of Transiting Exoplanets using Statistical Tools (VaTEST) project, which aims to validate new exoplanets for further characterization. We validated 11 new exoplanets by examining the light curves of 24 candidates using the LATTE and TESS-Plot tools and computing the false-positive probabilities using the statistical validation tool TRICERATOPS. These include planets suitable for atmospheric characterization using transmission spectroscopy (TOI-2194b), emission spectroscopy (TOI-3082b and TOI-5704b) and for both transmission and emission spectroscopy (TOI-672b, TOI-1694b, and TOI-2443b). Our validated planets have one super-Earth (TOI-2194b) orbiting a bright (V = 8.42 mag), metal-poor ([Fe/H] = −0.3720 ± 0.1) star, and one short-period Neptune-like planet (TOI-5704) in the hot-Neptune desert. In total, we validated one super-Earth, seven sub-Neptunes, one Neptune-like, and two sub-Saturn or super-Neptune-like exoplanets. Additionally, we identify five likely planet candidates (TOI-323, TOI-1180, TOI-2200, TOI-2408, and TOI-3913), which can be further studied to establish their planetary nature.

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Publisher

IOP Publishing

Subject

Emission spectroscopy

/ Extrasolar planets

/ Iron

/ K stars

/ Light curve

/ Metallicity

/ Neptune