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

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

doi:10.3847/1538-3881/acd548

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

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

^*Corresponding author for this work

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Abstract

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.

Original language	English
Article number	9
Number of pages	21
Journal	The Astronomical Journal
Volume	166
Issue number	1
Early online date	12 Jun 2023
DOIs	https://doi.org/10.3847/1538-3881/acd548
Publication status	Published - 1 Jul 2023

Keywords

Exoplanet systems
Exoplanet detection methods
Exoplanet astronomy

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Mistry, P., Pathak, K., Prasad, A., Lekkas, G., Bhattarai, S., Gharat, S., Maity, M., Kumar, D., Collins, K. A., Schwarz, R. P., Mann, C. R., Furlan, E., Howell, S. B., Ciardi, D., Bieryla, A., Matthews, E. C., Gonzales, E., Ziegler, C., Crossfield, I., ... Triaud, A. H. M. J. (2023). VaTEST. II. Statistical Validation of 11 TESS-detected Exoplanets Orbiting K-type Stars. The Astronomical Journal, 166(1), Article 9. https://doi.org/10.3847/1538-3881/acd548

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title = "VaTEST.: II. Statistical Validation of 11 TESS-detected Exoplanets Orbiting K-type Stars",

abstract = "NASA{\textquoteright}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.",

keywords = "Exoplanet systems, Exoplanet detection methods, Exoplanet astronomy",

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

year = "2023",

month = jul,

day = "1",

doi = "10.3847/1538-3881/acd548",

language = "English",

volume = "166",

journal = "The Astronomical Journal",

issn = "0004-6256",

publisher = "American Astronomical Society",

number = "1",

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Mistry, P, Pathak, K, Prasad, A, Lekkas, G, Bhattarai, S, Gharat, S, Maity, M, Kumar, D, Collins, KA, Schwarz, RP, Mann, CR, Furlan, E, Howell, SB, Ciardi, D, Bieryla, A, Matthews, EC, Gonzales, E, Ziegler, C, Crossfield, I, Giacalone, S, Tan, T-G, Evans, P, Hełminiak, KG, Collins, KI, Narita, N, Fukui, A, Pozuelos, FJ, Dressing, C, Soubkiou, A, Benkhaldoun, Z, Schlieder, JE, Suarez, O, Barkaoui, K, Palle, E, Murgas, F, Srdoc, G, Goliguzova, MV, Strakhov, IA, Gnilka, C, Lester, K, Littlefield, C, Scott, N, Matson, R, Gillon, M, Jehin, E, Timmermans, M, Ghachoui, M, Abe, L, Bendjoya, P, Guillot, T & Triaud, AHMJ 2023, 'VaTEST. II. Statistical Validation of 11 TESS-detected Exoplanets Orbiting K-type Stars', The Astronomical Journal, vol. 166, no. 1, 9. https://doi.org/10.3847/1538-3881/acd548

TY - JOUR

T1 - VaTEST.

T2 - II. Statistical Validation of 11 TESS-detected Exoplanets Orbiting K-type Stars

AU - Mistry, Priyashkumar

AU - Pathak, Kamlesh

AU - Prasad, Aniket

AU - Lekkas, Georgios

AU - Bhattarai, Surendra

AU - Gharat, Sarvesh

AU - Maity, Mousam

AU - Kumar, Dhruv

AU - Collins, Karen A.

AU - Schwarz, Richard P.

AU - Mann, Christopher R.

AU - Furlan, Elise

AU - Howell, Steve B.

AU - Ciardi, David

AU - Bieryla, Allyson

AU - Matthews, Elisabeth C.

AU - Gonzales, Erica

AU - Ziegler, Carl

AU - Crossfield, Ian

AU - Giacalone, Steven

AU - Tan, Thiam-Guan

AU - Evans, Phil

AU - Hełminiak, Krzysztof G.

AU - Collins, Kevin I.

AU - Narita, Norio

AU - Fukui, Akihiko

AU - Pozuelos, Francisco J.

AU - Dressing, Courtney

AU - Soubkiou, Abderahmane

AU - Benkhaldoun, Zouhair

AU - Schlieder, Joshua E.

AU - Suarez, Olga

AU - Barkaoui, Khalid

AU - Palle, Enric

AU - Murgas, Felipe

AU - Srdoc, Gregor

AU - Goliguzova, Maria V.

AU - Strakhov, Ivan A.

AU - Gnilka, Crystal

AU - Lester, Kathryn

AU - Littlefield, Colin

AU - Scott, Nic

AU - Matson, Rachel

AU - Gillon, Michaël

AU - Jehin, Emmanuel

AU - Timmermans, Mathilde

AU - Ghachoui, Mourad

AU - Abe, Lyu

AU - Bendjoya, Philippe

AU - Guillot, Tristan

AU - Triaud, Amaury H. M. J.

PY - 2023/7/1

Y1 - 2023/7/1

N2 - 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.

AB - 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.

KW - Exoplanet systems

KW - Exoplanet detection methods

KW - Exoplanet astronomy

U2 - 10.3847/1538-3881/acd548

DO - 10.3847/1538-3881/acd548

M3 - Article

SN - 0004-6256

VL - 166

JO - The Astronomical Journal

JF - The Astronomical Journal

IS - 1

M1 - 9

ER -

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

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