TOI-1859b: A 64-Day warm Jupiter on an eccentric and misaligned orbit

Jiayin Dong; Songhu Wang; Malena Rice; George Zhou; Chelsea X. Huang; Rebekah I. Dawson; Gudmundur K. Stefánsson; Samuel Halverson; Shubham Kanodia; Suvrath Mahadevan; Michael W. McElwain; Jaime A. Alvarado-Montes; Joe P. Ninan; Paul Robertson; Arpita Roy; Christian Schwab; Sarah E. Logsdon; Ryan C. Terrien; Karen A. Collins; Gregor Srdoc; Ramotholo Sefako; Didier Laloum; David W. Latham; Allyson Bieryla; Paul A. Dalba; Diana Dragomir; Steven Villanueva Jr.; Steve B. Howell; George R. Ricker; S. Seager; Joshua N. Winn; Jon M. Jenkins; Avi Shporer; David Rapetti

doi:10.3847/2041-8213/acd93d

TOI-1859b: A 64-Day warm Jupiter on an eccentric and misaligned orbit

Jiayin Dong^*, Songhu Wang, Malena Rice, George Zhou, Chelsea X. Huang, Rebekah I. Dawson, Gudmundur K. Stefánsson, Samuel Halverson, Shubham Kanodia, Suvrath Mahadevan, Michael W. McElwain, Jaime A. Alvarado-Montes, Joe P. Ninan, Paul Robertson, Arpita Roy, Christian Schwab, Sarah E. Logsdon, Ryan C. Terrien, Karen A. Collins, Gregor SrdocRamotholo Sefako, Didier Laloum, David W. Latham, Allyson Bieryla, Paul A. Dalba, Diana Dragomir, Steven Villanueva Jr., Steve B. Howell, George R. Ricker, S. Seager, Joshua N. Winn, Jon M. Jenkins, Avi Shporer, David Rapetti

^*Corresponding author for this work

School of Mathematical and Physical Sciences

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Abstract

Warm Jupiters are close-in giant planets with relatively large planet-star separations (i.e., 10 < a/R_⋆ < 100). Given their weak tidal interactions with their host stars, measurements of stellar obliquity may be used to probe the initial obliquity distribution and dynamical history for close-in gas giants. Using spectroscopic observations, we confirm the planetary nature of TOI-1859b and determine the stellar obliquity of TOI-1859 to be λ = 38.9_−2.7^+2.8_°relative to its planetary companion using the Rossiter-McLaughlin effect. TOI-1859b is a 64 day warm Jupiter orbiting around a late F dwarf and has an orbital eccentricity of 0.57_−0.16^+0.12 inferred purely from transit light curves. The eccentric and misaligned orbit of TOI-1859b is likely an outcome of dynamical interactions, such as planet-planet scattering and planet-disk resonance crossing.

Original language	English
Article number	L29
Pages (from-to)	1-12
Number of pages	12
Journal	Astrophysical Journal Letters
Volume	951
Issue number	2
DOIs	https://doi.org/10.3847/2041-8213/acd93d
Publication status	Published - 7 Jul 2023

Bibliographical note

© 2023. The Author(s). Published by the American Astronomical Society. Version archived for private and non-commercial use with the permission of the author/s and according to publisher conditions. For further rights please contact the publisher.

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Dong, J., Wang, S., Rice, M., Zhou, G., Huang, C. X., Dawson, R. I., Stefánsson, G. K., Halverson, S., Kanodia, S., Mahadevan, S., McElwain, M. W., Alvarado-Montes, J. A., Ninan, J. P., Robertson, P., Roy, A., Schwab, C., Logsdon, S. E., Terrien, R. C., Collins, K. A., ... Rapetti, D. (2023). TOI-1859b: A 64-Day warm Jupiter on an eccentric and misaligned orbit. Astrophysical Journal Letters, 951(2), 1-12. Article L29. https://doi.org/10.3847/2041-8213/acd93d

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title = "TOI-1859b: A 64-Day warm Jupiter on an eccentric and misaligned orbit",

abstract = "Warm Jupiters are close-in giant planets with relatively large planet-star separations (i.e., 10 < a/R⋆ < 100). Given their weak tidal interactions with their host stars, measurements of stellar obliquity may be used to probe the initial obliquity distribution and dynamical history for close-in gas giants. Using spectroscopic observations, we confirm the planetary nature of TOI-1859b and determine the stellar obliquity of TOI-1859 to be λ = 38.9−2.7+2.8° relative to its planetary companion using the Rossiter-McLaughlin effect. TOI-1859b is a 64 day warm Jupiter orbiting around a late F dwarf and has an orbital eccentricity of 0.57−0.16+0.12 inferred purely from transit light curves. The eccentric and misaligned orbit of TOI-1859b is likely an outcome of dynamical interactions, such as planet-planet scattering and planet-disk resonance crossing.",

author = "Jiayin Dong and Songhu Wang and Malena Rice and George Zhou and Huang, {Chelsea X.} and Dawson, {Rebekah I.} and Stef{\'a}nsson, {Gudmundur K.} and Samuel Halverson and Shubham Kanodia and Suvrath Mahadevan and McElwain, {Michael W.} and Alvarado-Montes, {Jaime A.} and Ninan, {Joe P.} and Paul Robertson and Arpita Roy and Christian Schwab and Logsdon, {Sarah E.} and Terrien, {Ryan C.} and Collins, {Karen A.} and Gregor Srdoc and Ramotholo Sefako and Didier Laloum and Latham, {David W.} and Allyson Bieryla and Dalba, {Paul A.} and Diana Dragomir and {Villanueva Jr.}, Steven and Howell, {Steve B.} and Ricker, {George R.} and S. Seager and Winn, {Joshua N.} and Jenkins, {Jon M.} and Avi Shporer and David Rapetti",

note = "{\textcopyright} 2023. The Author(s). Published by the American Astronomical Society. Version archived for private and non-commercial use with the permission of the author/s and according to publisher conditions. For further rights please contact the publisher.",

year = "2023",

month = jul,

day = "7",

doi = "10.3847/2041-8213/acd93d",

language = "English",

volume = "951",

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journal = "Astrophysical Journal Letters",

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Dong, J, Wang, S, Rice, M, Zhou, G, Huang, CX, Dawson, RI, Stefánsson, GK, Halverson, S, Kanodia, S, Mahadevan, S, McElwain, MW, Alvarado-Montes, JA, Ninan, JP, Robertson, P, Roy, A, Schwab, C, Logsdon, SE, Terrien, RC, Collins, KA, Srdoc, G, Sefako, R, Laloum, D, Latham, DW, Bieryla, A, Dalba, PA, Dragomir, D, Villanueva Jr., S, Howell, SB, Ricker, GR, Seager, S, Winn, JN, Jenkins, JM, Shporer, A & Rapetti, D 2023, 'TOI-1859b: A 64-Day warm Jupiter on an eccentric and misaligned orbit', Astrophysical Journal Letters, vol. 951, no. 2, L29, pp. 1-12. https://doi.org/10.3847/2041-8213/acd93d

TY - JOUR

T1 - TOI-1859b

T2 - A 64-Day warm Jupiter on an eccentric and misaligned orbit

AU - Dong, Jiayin

AU - Wang, Songhu

AU - Rice, Malena

AU - Zhou, George

AU - Huang, Chelsea X.

AU - Dawson, Rebekah I.

AU - Stefánsson, Gudmundur K.

AU - Halverson, Samuel

AU - Kanodia, Shubham

AU - Mahadevan, Suvrath

AU - McElwain, Michael W.

AU - Alvarado-Montes, Jaime A.

AU - Ninan, Joe P.

AU - Robertson, Paul

AU - Roy, Arpita

AU - Schwab, Christian

AU - Logsdon, Sarah E.

AU - Terrien, Ryan C.

AU - Collins, Karen A.

AU - Srdoc, Gregor

AU - Sefako, Ramotholo

AU - Laloum, Didier

AU - Latham, David W.

AU - Bieryla, Allyson

AU - Dalba, Paul A.

AU - Dragomir, Diana

AU - Villanueva Jr., Steven

AU - Howell, Steve B.

AU - Ricker, George R.

AU - Seager, S.

AU - Winn, Joshua N.

AU - Jenkins, Jon M.

AU - Shporer, Avi

AU - Rapetti, David

N1 - © 2023. The Author(s). Published by the American Astronomical Society. Version archived for private and non-commercial use with the permission of the author/s and according to publisher conditions. For further rights please contact the publisher.

PY - 2023/7/7

Y1 - 2023/7/7

N2 - Warm Jupiters are close-in giant planets with relatively large planet-star separations (i.e., 10 < a/R⋆ < 100). Given their weak tidal interactions with their host stars, measurements of stellar obliquity may be used to probe the initial obliquity distribution and dynamical history for close-in gas giants. Using spectroscopic observations, we confirm the planetary nature of TOI-1859b and determine the stellar obliquity of TOI-1859 to be λ = 38.9−2.7+2.8° relative to its planetary companion using the Rossiter-McLaughlin effect. TOI-1859b is a 64 day warm Jupiter orbiting around a late F dwarf and has an orbital eccentricity of 0.57−0.16+0.12 inferred purely from transit light curves. The eccentric and misaligned orbit of TOI-1859b is likely an outcome of dynamical interactions, such as planet-planet scattering and planet-disk resonance crossing.

AB - Warm Jupiters are close-in giant planets with relatively large planet-star separations (i.e., 10 < a/R⋆ < 100). Given their weak tidal interactions with their host stars, measurements of stellar obliquity may be used to probe the initial obliquity distribution and dynamical history for close-in gas giants. Using spectroscopic observations, we confirm the planetary nature of TOI-1859b and determine the stellar obliquity of TOI-1859 to be λ = 38.9−2.7+2.8° relative to its planetary companion using the Rossiter-McLaughlin effect. TOI-1859b is a 64 day warm Jupiter orbiting around a late F dwarf and has an orbital eccentricity of 0.57−0.16+0.12 inferred purely from transit light curves. The eccentric and misaligned orbit of TOI-1859b is likely an outcome of dynamical interactions, such as planet-planet scattering and planet-disk resonance crossing.

UR - http://www.scopus.com/inward/record.url?scp=85164920051&partnerID=8YFLogxK

U2 - 10.3847/2041-8213/acd93d

DO - 10.3847/2041-8213/acd93d

M3 - Article

AN - SCOPUS:85164920051

SN - 2041-8205

VL - 951

SP - 1

EP - 12

JO - Astrophysical Journal Letters

JF - Astrophysical Journal Letters

IS - 2

M1 - L29

ER -

TOI-1859b: A 64-Day warm Jupiter on an eccentric and misaligned orbit

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