A Third Exoplanetary System with Misaligned Orbital and Stellar Spin Axes

被引：77

作者：

Johnson, John Asher ^{[1
]}

Winn, Joshua N. ^{[2
,3
]}

Albrecht, Simon ^{[2
,3
]}

Howard, Andrew W. ^{[4
]}

Marcy, Geoffrey W. ^{[4
]}

Gazak, J. Zachary ^{[1
]}

机构：

[1] Univ Hawaii, Inst Astron, Honolulu, HI 96822 USA

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

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

[4] Univ Calif Berkeley, Dept Astron, Berkeley, CA 94720 USA

来源：

PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF THE PACIFIC | 2009年 / 121卷 / 884期

关键词：

PLANET-PLANET SCATTERING; ECCENTRIC ORBIT; HD; 147506B; SPECTROSCOPIC TRANSIT; EXTRASOLAR PLANETS; STAR; ALIGNMENT; BINARY; PRECISION; MIGRATION;

D O I：

10.1086/644604

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We present evidence that the WASP-14 exoplanetary system has misaligned orbital and stellar-rotational axes, with an angle lambda = -33.1 degrees +/- 7.4 degrees between their sky projections. The evidence is based on spectroscopic observations of the Rossiter-McLaughlin effect as well as new photometric observations. WASP-14 is now the third system known to have a significant spin-orbit misalignment, and all three systems have "super-Jupiter" planets (M(P) > 3 M(Jup)) and eccentric orbits. This finding suggests that the migration and subsequent orbital evolution of massive, eccentric exoplanets is somehow different from that of less massive close-in Jupiters, the majority of which have well-aligned orbits.

引用

页码：1104 / 1111

页数：8

共 47 条

[21] Refined parameters and spectroscopic transit of the super-massive planet HD 147506b [J].