Searching for planets in the Hyades. V. Limits on planet detection in the presence of stellar activity

被引：90
作者：
Paulson, DB
Cochran, WD
Hatzes, AP
机构：
[1] Univ Texas, Dept Astron, Austin, TX 78712 USA
[2] Univ Texas, McDonald Observ, Austin, TX 78712 USA
[3] Thuringer Landessternwarte Tautenburg, D-07778 Tautenburg, Germany
来源：
ASTRONOMICAL JOURNAL | 2004年 / 127卷 / 06期
基金：
美国国家科学基金会;
关键词：
open clusters and associations : individual (Hyades); planetary systems; stars : activity; techniques : radial velocities;
D O I：
10.1086/420710
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
We present the results of a radial velocity survey of a sample of Hyades stars and discuss the effects of stellar activity on radial velocity measurements. The level of radial velocity scatter due to rotational modulation of stellar surface features for the Hyades is in agreement with the 1997 predictions of Saar & Donahue - the maximum radial velocity rms of up to similar to 50 m s(-1), with an average rms of similar to16 m s(-1). In this sample of 94 stars we find one new binary, two stars with linear trends indicative of binary companions, and no close-in giant planets. We discuss the limits on extrasolar planet detection in the Hyades and the constraints imposed on radial velocity surveys of young stars.
引用
收藏
页码：3579 / 3586
页数：8
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