Measurement of the Rossiter-McLaughlin effect in the transiting exoplanetary system TrES-1

被引：80

作者：

Narita, Norio

Enya, Keigo

Sato, Bun'ei

Ohta, Yasuhiro

Winn, Joshua N.

Suto, Yasushi

Taruya, Atsushi

Turner, Edwin L.

Aoki, Wako

Tamura, Motohide

Yamada, Toru

Yoshii, Yuzuru

机构：

[1] Univ Tokyo, Sch Sci, Dept Phys, Bunkyo Ku, Tokyo 1130033, Japan

[2] Japan Aerosp Explorat Agcy, Inst Space & Astronaut Sci, Dept Infrared Astrophys, Kanagawa 2298510, Japan

[3] Natl Astron Observ Japan, Okayama Astrophys Observ, Okayama 7190232, Japan

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

[5] MIT, Kavil Inst Astrophys & Space Res, Cambridge, MA 02139 USA

[6] Princeton Univ, Ctr Energy & Environm Studies, Princeton, NJ 08544 USA

[7] Natl Astron Observ Japan, Tokyo 1818588, Japan

[8] Univ Tokyo, Sch Sci, Inst Astron, Tokyo 1810015, Japan

[9] Univ Tokyo, Res Ctr Early Universe, Bunkyo Ku, Tokyo 1130033, Japan

来源：

PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF JAPAN | 2007年 / 59卷 / 04期

关键词：

stars : planetary systems : individual (TrES-1); stars : rotation; techniques : photometric; techniques : radial velocities; techniques : spectroscopic;

D O I：

10.1093/pasj/59.4.763

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We report a measurement of the Rossiter-McLaughlin effect in the transiting extrasolar planetary system TrES-1, via simultaneous spectroscopic and photometric observations with the Subaru and MAGNUM telescopes. By modeling the radial velocity anomaly that was observed during a transit, we determine the sky-projected angle between the stellar spin axis and the planetary orbital axis to be lambda = 30 degrees +/- 21 degrees. This is the third case for which, has been measured in a transiting exoplanetary system, and the first demonstration that such measurements are possible for relatively faint host stars (V similar to 12, as compared to V similar to 8 for the other systems). We also derive a time of mid-transit, constraints on the eccentricity of the TrES-1b orbit (e = 0.048 +/- 0.025), and upper limits on the mass of the Trojan companions (less than or similar to 14 M-circle plus) at the 3 sigma level.

引用

页码：763 / 770

页数：8

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