TOI-4336 A b: A temperate sub-Neptune ripe for atmospheric characterization in a nearby triple M-dwarf system

M. Timmermans; G. Dransfield; M. Gillon; A. H. M. J. Triaud; B. V. Rackham; C. Aganze; K. Barkaoui; C. Briceno; A. J. Burgasser; K. A. Collins; M. Cointepas; M. Dévora-Pajares; E. Ducrot; S. Zuniga-Fernandez; S. B. Howell; L. Kaltenegger; C. A. Murray; E. K. Pass; S. N. Quinn; S. N. Raymond; D. Sebastian; K. G. Stassun; C. Ziegler; J. M. Almenara; Z. Benkhaldoun; X. Bonfils; J.L. Christiansen; F. Davoudi; J. de Wit; L. Delrez; B. -O. Demory; W. Fong; G. Fűrész; M. Ghachoui; L. J. Garcia; Y. Gómez Maqueo Chew; M. J. Hooton; K. Horne; M. N. Günther; E. Jehin; J. M. Jenkins; N. Law; A. W. Mann; F. Murgas; F. J. Pozuelos; P. P. Pedersen; D. Queloz; G. Ricker; P. Rowden; R. P. Schwarz; S. Seager; R. L. Smart; G. Srdoc; S. Striegel; S. Thompson; R. Vanderspek; J. N. Winn

doi:10.1051/0004-6361/202347981

TOI-4336 A b: A temperate sub-Neptune ripe for atmospheric characterization in a nearby triple M-dwarf system

M. Timmermans, G. Dransfield, M. Gillon, A. H. M. J. Triaud, B. V. Rackham, C. Aganze, K. Barkaoui, C. Briceno, A. J. Burgasser, K. A. Collins, M. Cointepas, M. Dévora-Pajares, E. Ducrot, S. Zuniga-Fernandez, S. B. Howell, L. Kaltenegger, C. A. Murray, E. K. Pass, S. N. Quinn, S. N. RaymondD. Sebastian, K. G. Stassun, C. Ziegler, J. M. Almenara, Z. Benkhaldoun, X. Bonfils, J.L. Christiansen, F. Davoudi, J. de Wit, L. Delrez, B. -O. Demory, W. Fong, G. Fűrész, M. Ghachoui, L. J. Garcia, Y. Gómez Maqueo Chew, M. J. Hooton, K. Horne, M. N. Günther, E. Jehin, J. M. Jenkins, N. Law, A. W. Mann, F. Murgas, F. J. Pozuelos, P. P. Pedersen, D. Queloz, G. Ricker, P. Rowden, R. P. Schwarz, S. Seager, R. L. Smart, G. Srdoc, S. Striegel, S. Thompson, R. Vanderspek, J. N. Winn

Physics and Astronomy

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Abstract

Context: Small planets transiting bright nearby stars are essential to our understanding of the formation and evolution of exoplanetary systems. However, few constitute prime targets for atmospheric characterization, and even fewer are part of multiple star systems.

Aims: This work aims to validate TOI-4336 A b, a sub-Neptune-sized exoplanet candidate identified by the TESS space-based transit survey around a nearby M-dwarf.

Methods: We validate the planetary nature of TOI-4336 A b through the global analysis of TESS and follow-up multi-band high-precision photometric data from ground-based telescopes, medium- and high-resolution spectroscopy of the host star, high-resolution speckle imaging, and archival images.

Results: The newly discovered exoplanet TOI-4336 A b has a radius of 2.1±0.1R_⊕. Its host star is an M3.5-dwarf star of mass 0.33±0.01M_⊙ and radius 0.33±0.02R_⊙ member of a hierarchical triple M-dwarf system 22 pc away from the Sun. The planet's orbital period of 16.3 days places it at the inner edge of the Habitable Zone of its host star, the brightest of the inner binary pair. The parameters of the system make TOI-4336 A b an extremely promising target for the detailed atmospheric characterization of a temperate sub-Neptune by transit transmission spectroscopy with JWST.

Original language	English
Article number	A48
Number of pages	27
Journal	Astronomy and Astrophysics
Volume	687
Early online date	28 Jun 2024
DOIs	https://doi.org/10.1051/0004-6361/202347981
Publication status	Published - Jul 2024

Keywords

techniques: photometric
planets and satellites: detection
planets and satellites: individual: TOI-4336 A b
stars: low-mass
planetary systems

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Timmermans, M., Dransfield, G., Gillon, M., Triaud, A. H. M. J., Rackham, B. V., Aganze, C., Barkaoui, K., Briceno, C., Burgasser, A. J., Collins, K. A., Cointepas, M., Dévora-Pajares, M., Ducrot, E., Zuniga-Fernandez, S., Howell, S. B., Kaltenegger, L., Murray, C. A., Pass, E. K., Quinn, S. N., ... Winn, J. N. (2024). TOI-4336 A b: A temperate sub-Neptune ripe for atmospheric characterization in a nearby triple M-dwarf system. Astronomy and Astrophysics, 687, Article A48. https://doi.org/10.1051/0004-6361/202347981

@article{fe5719f462324b529c583da9363eaa51,

title = "TOI-4336 A b: A temperate sub-Neptune ripe for atmospheric characterization in a nearby triple M-dwarf system",

abstract = "Context: Small planets transiting bright nearby stars are essential to our understanding of the formation and evolution of exoplanetary systems. However, few constitute prime targets for atmospheric characterization, and even fewer are part of multiple star systems. Aims: This work aims to validate TOI-4336 A b, a sub-Neptune-sized exoplanet candidate identified by the TESS space-based transit survey around a nearby M-dwarf. Methods: We validate the planetary nature of TOI-4336 A b through the global analysis of TESS and follow-up multi-band high-precision photometric data from ground-based telescopes, medium- and high-resolution spectroscopy of the host star, high-resolution speckle imaging, and archival images. Results: The newly discovered exoplanet TOI-4336 A b has a radius of 2.1±0.1R⊕. Its host star is an M3.5-dwarf star of mass 0.33±0.01M⊙ and radius 0.33±0.02R⊙ member of a hierarchical triple M-dwarf system 22 pc away from the Sun. The planet's orbital period of 16.3 days places it at the inner edge of the Habitable Zone of its host star, the brightest of the inner binary pair. The parameters of the system make TOI-4336 A b an extremely promising target for the detailed atmospheric characterization of a temperate sub-Neptune by transit transmission spectroscopy with JWST.",

keywords = "techniques: photometric, planets and satellites: detection, planets and satellites: individual: TOI-4336 A b, stars: low-mass, planetary systems",

author = "M. Timmermans and G. Dransfield and M. Gillon and Triaud, {A. H. M. J.} and Rackham, {B. V.} and C. Aganze and K. Barkaoui and C. Briceno and Burgasser, {A. J.} and Collins, {K. A.} and M. Cointepas and M. D{\'e}vora-Pajares and E. Ducrot and S. Zuniga-Fernandez and Howell, {S. B.} and L. Kaltenegger and Murray, {C. A.} and Pass, {E. K.} and Quinn, {S. N.} and Raymond, {S. N.} and D. Sebastian and Stassun, {K. G.} and C. Ziegler and Almenara, {J. M.} and Z. Benkhaldoun and X. Bonfils and J.L. Christiansen and F. Davoudi and Wit, {J. de} and L. Delrez and Demory, {B. -O.} and W. Fong and G. F{\H u}r{\'e}sz and M. Ghachoui and Garcia, {L. J.} and Chew, {Y. G{\'o}mez Maqueo} and Hooton, {M. J.} and K. Horne and G{\"u}nther, {M. N.} and E. Jehin and Jenkins, {J. M.} and N. Law and Mann, {A. W.} and F. Murgas and Pozuelos, {F. J.} and Pedersen, {P. P.} and D. Queloz and G. Ricker and P. Rowden and Schwarz, {R. P.} and S. Seager and Smart, {R. L.} and G. Srdoc and S. Striegel and S. Thompson and R. Vanderspek and Winn, {J. N.}",

year = "2024",

month = jul,

doi = "10.1051/0004-6361/202347981",

language = "English",

volume = "687",

journal = "Astronomy and Astrophysics",

issn = "0004-6361",

publisher = "EDP Sciences",

}

Timmermans, M, Dransfield, G, Gillon, M, Triaud, AHMJ, Rackham, BV, Aganze, C, Barkaoui, K, Briceno, C, Burgasser, AJ, Collins, KA, Cointepas, M, Dévora-Pajares, M, Ducrot, E, Zuniga-Fernandez, S, Howell, SB, Kaltenegger, L, Murray, CA, Pass, EK, Quinn, SN, Raymond, SN, Sebastian, D, Stassun, KG, Ziegler, C, Almenara, JM, Benkhaldoun, Z, Bonfils, X, Christiansen, JL, Davoudi, F, Wit, JD, Delrez, L, Demory, B-O, Fong, W, Fűrész, G, Ghachoui, M, Garcia, LJ, Chew, YGM, Hooton, MJ, Horne, K, Günther, MN, Jehin, E, Jenkins, JM, Law, N, Mann, AW, Murgas, F, Pozuelos, FJ, Pedersen, PP, Queloz, D, Ricker, G, Rowden, P, Schwarz, RP, Seager, S, Smart, RL, Srdoc, G, Striegel, S, Thompson, S, Vanderspek, R & Winn, JN 2024, 'TOI-4336 A b: A temperate sub-Neptune ripe for atmospheric characterization in a nearby triple M-dwarf system', Astronomy and Astrophysics, vol. 687, A48. https://doi.org/10.1051/0004-6361/202347981

TY - JOUR

T1 - TOI-4336 A b

T2 - A temperate sub-Neptune ripe for atmospheric characterization in a nearby triple M-dwarf system

AU - Timmermans, M.

AU - Dransfield, G.

AU - Gillon, M.

AU - Triaud, A. H. M. J.

AU - Rackham, B. V.

AU - Aganze, C.

AU - Barkaoui, K.

AU - Briceno, C.

AU - Burgasser, A. J.

AU - Collins, K. A.

AU - Cointepas, M.

AU - Dévora-Pajares, M.

AU - Ducrot, E.

AU - Zuniga-Fernandez, S.

AU - Howell, S. B.

AU - Kaltenegger, L.

AU - Murray, C. A.

AU - Pass, E. K.

AU - Quinn, S. N.

AU - Raymond, S. N.

AU - Sebastian, D.

AU - Stassun, K. G.

AU - Ziegler, C.

AU - Almenara, J. M.

AU - Benkhaldoun, Z.

AU - Bonfils, X.

AU - Christiansen, J.L.

AU - Davoudi, F.

AU - Wit, J. de

AU - Delrez, L.

AU - Demory, B. -O.

AU - Fong, W.

AU - Fűrész, G.

AU - Ghachoui, M.

AU - Garcia, L. J.

AU - Chew, Y. Gómez Maqueo

AU - Hooton, M. J.

AU - Horne, K.

AU - Günther, M. N.

AU - Jehin, E.

AU - Jenkins, J. M.

AU - Law, N.

AU - Mann, A. W.

AU - Murgas, F.

AU - Pozuelos, F. J.

AU - Pedersen, P. P.

AU - Queloz, D.

AU - Ricker, G.

AU - Rowden, P.

AU - Schwarz, R. P.

AU - Seager, S.

AU - Smart, R. L.

AU - Srdoc, G.

AU - Striegel, S.

AU - Thompson, S.

AU - Vanderspek, R.

AU - Winn, J. N.

PY - 2024/7

Y1 - 2024/7

N2 - Context: Small planets transiting bright nearby stars are essential to our understanding of the formation and evolution of exoplanetary systems. However, few constitute prime targets for atmospheric characterization, and even fewer are part of multiple star systems. Aims: This work aims to validate TOI-4336 A b, a sub-Neptune-sized exoplanet candidate identified by the TESS space-based transit survey around a nearby M-dwarf. Methods: We validate the planetary nature of TOI-4336 A b through the global analysis of TESS and follow-up multi-band high-precision photometric data from ground-based telescopes, medium- and high-resolution spectroscopy of the host star, high-resolution speckle imaging, and archival images. Results: The newly discovered exoplanet TOI-4336 A b has a radius of 2.1±0.1R⊕. Its host star is an M3.5-dwarf star of mass 0.33±0.01M⊙ and radius 0.33±0.02R⊙ member of a hierarchical triple M-dwarf system 22 pc away from the Sun. The planet's orbital period of 16.3 days places it at the inner edge of the Habitable Zone of its host star, the brightest of the inner binary pair. The parameters of the system make TOI-4336 A b an extremely promising target for the detailed atmospheric characterization of a temperate sub-Neptune by transit transmission spectroscopy with JWST.

AB - Context: Small planets transiting bright nearby stars are essential to our understanding of the formation and evolution of exoplanetary systems. However, few constitute prime targets for atmospheric characterization, and even fewer are part of multiple star systems. Aims: This work aims to validate TOI-4336 A b, a sub-Neptune-sized exoplanet candidate identified by the TESS space-based transit survey around a nearby M-dwarf. Methods: We validate the planetary nature of TOI-4336 A b through the global analysis of TESS and follow-up multi-band high-precision photometric data from ground-based telescopes, medium- and high-resolution spectroscopy of the host star, high-resolution speckle imaging, and archival images. Results: The newly discovered exoplanet TOI-4336 A b has a radius of 2.1±0.1R⊕. Its host star is an M3.5-dwarf star of mass 0.33±0.01M⊙ and radius 0.33±0.02R⊙ member of a hierarchical triple M-dwarf system 22 pc away from the Sun. The planet's orbital period of 16.3 days places it at the inner edge of the Habitable Zone of its host star, the brightest of the inner binary pair. The parameters of the system make TOI-4336 A b an extremely promising target for the detailed atmospheric characterization of a temperate sub-Neptune by transit transmission spectroscopy with JWST.

KW - techniques: photometric

KW - planets and satellites: detection

KW - planets and satellites: individual: TOI-4336 A b

KW - stars: low-mass

KW - planetary systems

U2 - 10.1051/0004-6361/202347981

DO - 10.1051/0004-6361/202347981

M3 - Article

SN - 0004-6361

VL - 687

JO - Astronomy and Astrophysics

JF - Astronomy and Astrophysics

M1 - A48

ER -

TOI-4336 A b: A temperate sub-Neptune ripe for atmospheric characterization in a nearby triple M-dwarf system

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