TY - JOUR
T1 - TOI-4641b:ãnãligned warm Jupiter orbitingã bright ( V = 7.5) rapidly rotating F-star
AU - Bieryla, Allyson
AU - Zhou, George
AU - García-Mejía, Juliana
AU - Fairnington, Tyler R.
AU - Latham, David W.
AU - Carter, Brad
AU - Dong, Jiayin
AU - Huang, Chelsea X.
AU - Murphy, Simon J.
AU - Shporer, Avi
AU - Collins, Karen A.
AU - Quinn, Samuel N.
AU - Everett, Mark E.
AU - Buchhave, Lars A.
AU - Tronsgaard, René
AU - Charbonneau, David
AU - Johnson, Marshall C.
AU - Esquerdo, Gilbert A.
AU - Calkins, Michael
AU - Berlind, Perry
AU - Jenkins, Jon M.
AU - Ricker, George R.
AU - Seager, Sara
AU - Winn, Joshua N.
AU - Barclay, Thomas
AU - Mireles, Ismael
AU - Paegert, Martin
AU - Twicken, Joseph D.
N1 - Publisher Copyright:
© 2023 The Author(s).
PY - 2024/2/1
Y1 - 2024/2/1
N2 - We report the disco v ery of TOI-4641b,ã warm Jupiter transitingã rapidly rotating F-type star withã stellar ef fecti ve temperature of 6560 K. The planet hasã radius of 0.73 R Jup ,ã mass smaller than 3.87 M Jup (3 σ),ãndã period of 22.09 d. It is orbitingã bright star ( V = 7.5 mag) onã circular orbit withã radiusãnd mass of 1.73 R⊙and 1.41 M⊙ Follow-up ground-based photometry was obtained using the Tierras Observatory. Two transits wereãlso observed with the Tillinghast Reflector Echelle Spectrograph, revealing the star to haveã low projected spin-orbitãngle ( λ= 1 . 41 + 0 . 76 -0 . 76°). Such obliquity measurements for stars with warm Jupitersãre relatively few,ãnd may shed light on the formation of warm Jupiters. Among the known planets orbiting hotãnd rapidly rotating stars, TOI-4641b is one of the longest period planets to be thoroughly characterized. Unlike hot Jupitersãround hot stars whichãre more often misaligned, the warm Jupiter TOI-4641b is found inã well-aligned orbit. Future exploration of this parameter space canãdd one more dimension to the star-planet orbital obliquity distribution that has been well sampled for hot Jupiters.
AB - We report the disco v ery of TOI-4641b,ã warm Jupiter transitingã rapidly rotating F-type star withã stellar ef fecti ve temperature of 6560 K. The planet hasã radius of 0.73 R Jup ,ã mass smaller than 3.87 M Jup (3 σ),ãndã period of 22.09 d. It is orbitingã bright star ( V = 7.5 mag) onã circular orbit withã radiusãnd mass of 1.73 R⊙and 1.41 M⊙ Follow-up ground-based photometry was obtained using the Tierras Observatory. Two transits wereãlso observed with the Tillinghast Reflector Echelle Spectrograph, revealing the star to haveã low projected spin-orbitãngle ( λ= 1 . 41 + 0 . 76 -0 . 76°). Such obliquity measurements for stars with warm Jupitersãre relatively few,ãnd may shed light on the formation of warm Jupiters. Among the known planets orbiting hotãnd rapidly rotating stars, TOI-4641b is one of the longest period planets to be thoroughly characterized. Unlike hot Jupitersãround hot stars whichãre more often misaligned, the warm Jupiter TOI-4641b is found inã well-aligned orbit. Future exploration of this parameter space canãdd one more dimension to the star-planet orbital obliquity distribution that has been well sampled for hot Jupiters.
KW - exoplanets
KW - methods: observãtional
KW - techniques: photometric
KW - techniques: radial velocities
KW - techniques: spectroscopic
UR - https://www.scopus.com/pages/publications/85183375759
UR - https://www.scopus.com/pages/publications/85183375759#tab=citedBy
U2 - 10.1093/mnras/stad3785
DO - 10.1093/mnras/stad3785
M3 - Article
AN - SCOPUS:85183375759
SN - 0035-8711
VL - 527
SP - 10955
EP - 10964
JO - Monthly Notices of the Royal Astronomical Society
JF - Monthly Notices of the Royal Astronomical Society
IS - 4
ER -