TOI-5344 b: A Saturn-like Planet Orbiting a Super-solar Metallicity M0 Dwarf

Te Han; Paul Robertson; Shubham Kanodia; Caleb Cañas; Andrea S.J. Lin; Gumundur Stefánsson; Jessica E. Libby-Roberts; Alexander Larsen; Henry A. Kobulnicky; Suvrath Mahadevan; Chad F. Bender; William D. Cochran; Michael Endl; Mark E. Everett; Arvind F. Gupta; Samuel Halverson; Fred Hearty; Andrew Monson; Joe P. Ninan; Arpita Roy; Christian Schwab; Ryan C. Terrien

doi:10.3847/1538-3881/ad09c2

TOI-5344 b: A Saturn-like Planet Orbiting a Super-solar Metallicity M0 Dwarf

Te Han, Paul Robertson, Shubham Kanodia, Caleb Cañas, Andrea S.J. Lin, Gumundur Stefánsson, Jessica E. Libby-Roberts, Alexander Larsen, Henry A. Kobulnicky, Suvrath Mahadevan, Chad F. Bender, William D. Cochran, Michael Endl, Mark E. Everett, Arvind F. Gupta, Samuel Halverson, Fred Hearty, Andrew Monson, Joe P. Ninan, Arpita RoyChristian Schwab, Ryan C. Terrien

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Abstract

We confirm the planetary nature of TOI-5344 b as a transiting giant exoplanet around an M0-dwarf star. TOI-5344 b was discovered with the Transiting Exoplanet Survey Satellite photometry and confirmed with ground-based photometry (the Red Buttes Observatory 0.6 m telescope), radial velocity (the Habitable-zone Planet Finder), and speckle imaging (the NN-Explore Exoplanet Stellar Speckle Imager). TOI-5344 b is a Saturn-like giant planet (ρ = 0.80 − 0.15 + 0.17 g cm⁻³) with a planetary radius of 9.7 ± 0.5 R _⊕ (0.87 ± 0.04 R _Jup) and a planetary mass of 135 − 18 + 17 M ⊕ (0.42 − 0.06 + 0.05 M Jup ). It has an orbital period of 3.792622 − 0.000010 + 0.000010 days and an orbital eccentricity of 0.06 − 0.04 + 0.07 . We measure a high metallicity for TOI-5344 of [Fe/H] = 0.48 ± 0.12, where the high metallicity is consistent with expectations from formation through core accretion. We compare the metallicity of the M-dwarf hosts of giant exoplanets to that of M-dwarf hosts of nongiants (≲8 R _⊕). While the two populations appear to show different metallicity distributions, quantitative tests are prohibited by various sample caveats.

Original language	English (US)
Article number	4
Journal	Astronomical Journal
Volume	167
Issue number	1
DOIs	https://doi.org/10.3847/1538-3881/ad09c2
State	Published - Jan 1 2024

All Science Journal Classification (ASJC) codes

Astronomy and Astrophysics
Space and Planetary Science

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10.3847/1538-3881/ad09c2

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Han, T., Robertson, P., Kanodia, S., Cañas, C., Lin, A. S. J., Stefánsson, G., Libby-Roberts, J. E., Larsen, A., Kobulnicky, H. A., Mahadevan, S., Bender, C. F., Cochran, W. D., Endl, M., Everett, M. E., Gupta, A. F., Halverson, S., Hearty, F., Monson, A., Ninan, J. P., ... Terrien, R. C. (2024). TOI-5344 b: A Saturn-like Planet Orbiting a Super-solar Metallicity M0 Dwarf. Astronomical Journal, 167(1), Article 4. https://doi.org/10.3847/1538-3881/ad09c2

@article{553e369989c3483483d9513ba82a4a89,

title = "TOI-5344 b: A Saturn-like Planet Orbiting a Super-solar Metallicity M0 Dwarf",

abstract = "We confirm the planetary nature of TOI-5344 b as a transiting giant exoplanet around an M0-dwarf star. TOI-5344 b was discovered with the Transiting Exoplanet Survey Satellite photometry and confirmed with ground-based photometry (the Red Buttes Observatory 0.6 m telescope), radial velocity (the Habitable-zone Planet Finder), and speckle imaging (the NN-Explore Exoplanet Stellar Speckle Imager). TOI-5344 b is a Saturn-like giant planet (ρ = 0.80 − 0.15 + 0.17 g cm−3) with a planetary radius of 9.7 ± 0.5 R ⊕ (0.87 ± 0.04 R Jup) and a planetary mass of 135 − 18 + 17 M ⊕ (0.42 − 0.06 + 0.05 M Jup ). It has an orbital period of 3.792622 − 0.000010 + 0.000010 days and an orbital eccentricity of 0.06 − 0.04 + 0.07 . We measure a high metallicity for TOI-5344 of [Fe/H] = 0.48 ± 0.12, where the high metallicity is consistent with expectations from formation through core accretion. We compare the metallicity of the M-dwarf hosts of giant exoplanets to that of M-dwarf hosts of nongiants (≲8 R ⊕). While the two populations appear to show different metallicity distributions, quantitative tests are prohibited by various sample caveats.",

author = "Te Han and Paul Robertson and Shubham Kanodia and Caleb Ca{\~n}as and Lin, {Andrea S.J.} and Gumundur Stef{\'a}nsson and Libby-Roberts, {Jessica E.} and Alexander Larsen and Kobulnicky, {Henry A.} and Suvrath Mahadevan and Bender, {Chad F.} and Cochran, {William D.} and Michael Endl and Everett, {Mark E.} and Gupta, {Arvind F.} and Samuel Halverson and Fred Hearty and Andrew Monson and Ninan, {Joe P.} and Arpita Roy and Christian Schwab and Terrien, {Ryan C.}",

note = "Publisher Copyright: {\textcopyright} 2023. The Author(s). Published by the American Astronomical Society.",

year = "2024",

month = jan,

day = "1",

doi = "10.3847/1538-3881/ad09c2",

language = "English (US)",

volume = "167",

journal = "Astronomical Journal",

issn = "0004-6256",

publisher = "American Astronomical Society",

number = "1",

}

Han, T, Robertson, P, Kanodia, S, Cañas, C, Lin, ASJ, Stefánsson, G, Libby-Roberts, JE, Larsen, A, Kobulnicky, HA, Mahadevan, S, Bender, CF, Cochran, WD, Endl, M, Everett, ME, Gupta, AF, Halverson, S, Hearty, F, Monson, A, Ninan, JP, Roy, A, Schwab, C & Terrien, RC 2024, 'TOI-5344 b: A Saturn-like Planet Orbiting a Super-solar Metallicity M0 Dwarf', Astronomical Journal, vol. 167, no. 1, 4. https://doi.org/10.3847/1538-3881/ad09c2

TY - JOUR

T1 - TOI-5344 b

T2 - A Saturn-like Planet Orbiting a Super-solar Metallicity M0 Dwarf

AU - Han, Te

AU - Robertson, Paul

AU - Kanodia, Shubham

AU - Cañas, Caleb

AU - Lin, Andrea S.J.

AU - Stefánsson, Gumundur

AU - Libby-Roberts, Jessica E.

AU - Larsen, Alexander

AU - Kobulnicky, Henry A.

AU - Mahadevan, Suvrath

AU - Bender, Chad F.

AU - Cochran, William D.

AU - Endl, Michael

AU - Everett, Mark E.

AU - Gupta, Arvind F.

AU - Halverson, Samuel

AU - Hearty, Fred

AU - Monson, Andrew

AU - Ninan, Joe P.

AU - Roy, Arpita

AU - Schwab, Christian

AU - Terrien, Ryan C.

PY - 2024/1/1

Y1 - 2024/1/1

N2 - We confirm the planetary nature of TOI-5344 b as a transiting giant exoplanet around an M0-dwarf star. TOI-5344 b was discovered with the Transiting Exoplanet Survey Satellite photometry and confirmed with ground-based photometry (the Red Buttes Observatory 0.6 m telescope), radial velocity (the Habitable-zone Planet Finder), and speckle imaging (the NN-Explore Exoplanet Stellar Speckle Imager). TOI-5344 b is a Saturn-like giant planet (ρ = 0.80 − 0.15 + 0.17 g cm−3) with a planetary radius of 9.7 ± 0.5 R ⊕ (0.87 ± 0.04 R Jup) and a planetary mass of 135 − 18 + 17 M ⊕ (0.42 − 0.06 + 0.05 M Jup ). It has an orbital period of 3.792622 − 0.000010 + 0.000010 days and an orbital eccentricity of 0.06 − 0.04 + 0.07 . We measure a high metallicity for TOI-5344 of [Fe/H] = 0.48 ± 0.12, where the high metallicity is consistent with expectations from formation through core accretion. We compare the metallicity of the M-dwarf hosts of giant exoplanets to that of M-dwarf hosts of nongiants (≲8 R ⊕). While the two populations appear to show different metallicity distributions, quantitative tests are prohibited by various sample caveats.

AB - We confirm the planetary nature of TOI-5344 b as a transiting giant exoplanet around an M0-dwarf star. TOI-5344 b was discovered with the Transiting Exoplanet Survey Satellite photometry and confirmed with ground-based photometry (the Red Buttes Observatory 0.6 m telescope), radial velocity (the Habitable-zone Planet Finder), and speckle imaging (the NN-Explore Exoplanet Stellar Speckle Imager). TOI-5344 b is a Saturn-like giant planet (ρ = 0.80 − 0.15 + 0.17 g cm−3) with a planetary radius of 9.7 ± 0.5 R ⊕ (0.87 ± 0.04 R Jup) and a planetary mass of 135 − 18 + 17 M ⊕ (0.42 − 0.06 + 0.05 M Jup ). It has an orbital period of 3.792622 − 0.000010 + 0.000010 days and an orbital eccentricity of 0.06 − 0.04 + 0.07 . We measure a high metallicity for TOI-5344 of [Fe/H] = 0.48 ± 0.12, where the high metallicity is consistent with expectations from formation through core accretion. We compare the metallicity of the M-dwarf hosts of giant exoplanets to that of M-dwarf hosts of nongiants (≲8 R ⊕). While the two populations appear to show different metallicity distributions, quantitative tests are prohibited by various sample caveats.

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U2 - 10.3847/1538-3881/ad09c2

DO - 10.3847/1538-3881/ad09c2

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SN - 0004-6256

VL - 167

JO - Astronomical Journal

JF - Astronomical Journal

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ER -

TOI-5344 b: A Saturn-like Planet Orbiting a Super-solar Metallicity M0 Dwarf

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