TOI-4641b: an aligned warm Jupiter orbiting a bright (V=7.5) rapidly rotating F-star

被引：0

作者：

Bieryla, Allyson ^{[1
,2
]}

Zhou, George ^{[2
]}

Garcia-Mejia, Juliana ^{[1
,3
,4
]}

Fairnington, Tyler R. ^{[1
]}

Latham, David W. ^{[1
]}

Carter, Brad ^{[2
]}

Dong, Jiayin ^{[5
]}

Huang, Chelsea X. ^{[2
]}

Murphy, Simon J. ^{[2
]}

Shporer, Avi ^{[3
,4
]}

Collins, Karen A. ^{[1
]}

Quinn, Samuel N. ^{[1
]}

Everett, Mark E. ^{[6
]}

Buchhave, Lars A. ^{[7
]}

Tronsgaard, Rene ^{[7
]}

Charbonneau, David ^{[1
]}

Johnson, Marshall C. ^{[8
]}

Esquerdo, Gilbert A. ^{[1
]}

Calkins, Michael ^{[1
]}

Berlind, Perry ^{[1
]}

Jenkins, Jon M. ^{[9
]}

Ricker, George R. ^{[3
,4
]}

Seager, Sara ^{[3
,4
,10
,11
]}

Winn, Joshua N. ^{[12
]}

Barclay, Thomas ^{[13
]}

Mireles, Ismael ^{[14
]}

Paegert, Martin ^{[1
]}

Twicken, Joseph D. ^{[15
]}

机构：

[1] Harvard Smithsonian Ctr Astrophys, 60 Garden St, Cambridge, MA 02138 USA

[2] Univ Southern Queensland, Ctr Astrophys, West St, Toowoomba, Qld 4350, Australia

[3] MIT, Dept Phys, Cambridge, MA 02139 USA

[4] MIT, Kavli Inst Astrophys & Space Res, Cambridge, MA 02139 USA

[5] Flatiron Inst, Ctr Computat Astrophys, 162 Fifth Ave, New York, NY 10010 USA

[6] NSFs Natl Opt Astron Res Lab, 950 N Cherry Ave, Tucson, AZ 85719 USA

[7] Tech Univ Denmark, DTU Space, Elektrovej 328, DK-2800 Lyngby, Denmark

[8] Ohio State Univ, Dept Astron, 4055 McPherson Lab,140 West 18th Ave, Columbus, OH 43210 USA

[9] NASA Ames Res Ctr, Moffett Field, CA 94035 USA

[10] MIT, Dept Earth Atmospher & Planetary Sci, 77 Massachusetts Ave, Cambridge, MA 02139 USA

[11] MIT, Dept Aeronaut & Astronaut, 77 Massachusetts Ave, Cambridge, MA 02139 USA

[12] Princeton Univ, Dept Astrophys Sci, 4 Ivy Lane, Princeton, NJ 08544 USA

[13] NASA Goddard Space Flight Ctr, 8800 Greenbelt Rd, Greenbelt, MD 20771 USA

[14] Univ New Mexico, Dept Phys & Astron, 210 Yale Blvd NE, Albuquerque, NM 87106 USA

[15] SETI Inst, Mountain View, CA 94043 USA

来源：

MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY | 2024年 / 527卷 / 04期

基金：

澳大利亚研究理事会;

关键词：

methods: observational; techniques: photometric; techniques: radial velocities; techniques: spectroscopic; exoplanets; PROTOSTELLAR DISKS; STELLAR ROTATION; ERROR-CORRECTION; PLANETARY; MISALIGNMENT; ORIGIN; VARIABILITY; TOMOGRAPHY; ALIGNMENT; II;

D O I：

暂无

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We report the discovery of TOI-4641b, a warm Jupiter transiting a rapidly rotating F-type star with a stellar effective temperature of 6560 K. The planet has a radius of 0.73 R-Jup, a mass smaller than 3.87 M-Jup(3 sigma), and a period of 22.09 d. It is orbiting a bright star (V=7.5 mag) on a circular orbit with a radius and mass of 1.73 R-circle dot and 1.41 M-circle dot. Follow-up ground-based photometry was obtained using the Tierras Observatory. Two transits were also observed with the Tillinghast Reflector Echelle Spectrograph, revealing the star to have a low projected spin-orbit angle (lambda=1.41(-0.76)(+0.76)degrees). Such obliquity measurements for stars with warm Jupiters are relatively few, and may shed light on the formation of warm Jupiters. Among the known planets orbiting hot and rapidly rotating stars, TOI-4641b is one of the longest period planets to be thoroughly characterized. Unlike hot Jupiters around hot stars which are more often misaligned, the warm Jupiter TOI-4641b is found in a well-aligned orbit. Future exploration of this parameter space can add one more dimension to the star-planet orbital obliquity distribution that has been well sampled for hot Jupiters.

引用

页码：10955 / 10964

页数：10

共 18 条

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