WASP-8b: a retrograde transiting planet in a multiple system

被引：122

作者：

Queloz, D. ^{[1
]}

Anderson, D. ^{[2
]}

Cameron, A. Collier ^{[3
]}

Gillon, M. ^{[4
]}

Hebb, L. ^{[3
]}

Hellier, C. ^{[2
]}

Maxted, P. ^{[2
]}

Pepe, F. ^{[1
]}

Pollacco, D. ^{[5
]}

Segransan, D. ^{[1
]}

Smalley, B. ^{[2
]}

Triaud, A. H. M. J. ^{[1
]}

Udry, S. ^{[1
]}

West, R. ^{[6
]}

机构：

[1] Univ Geneva, Astron Observ, CH-1290 Sauverny, Switzerland

[2] Univ Keele, Astrophys Grp, Keele ST5 5BG, Staffs, England

[3] Univ St Andrews, Sch Phys & Astron, St Andrews KY16 9SS, Fife, Scotland

[4] Univ Liege, Inst Astrophys & Geophys, Liege 1, Belgium

[5] Queens Univ Belfast, Astrophys Res Ctr, Sch Math & Phys, Belfast BT7 1NN, Antrim, North Ireland

[6] Univ Leicester, Dept Phys & Astron, Leicester LE1 7RH, Leics, England

来源：

ASTRONOMY & ASTROPHYSICS | 2010年 / 517卷

关键词：

stars: individual: WASP-8; techniques: photometric; techniques: spectroscopic; planet-star interactions; planetary systems; techniques: radial velocities; CORALIE SURVEY; HOT JUPITERS; STARS; COMPANIONS; MIGRATION; SUPERWASP; EVOLUTION;

D O I：

10.1051/0004-6361/201014768

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We report the discovery of WASP-8b, a transiting planet of 2.25 +/- 0.08 M-Jup on a strongly inclined eccentric 8.15-day orbit, moving in a retrograde direction to the rotation of its late-G host star. Evidence is found that the star is in a multiple stellar system with two other companions. The dynamical complexity of the system indicates that it may have experienced secular interactions such as the Kozai mechanism or a formation that differs from the "classical" disc-migration theory.

引用

页数：4

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