The planet search program at the ESO Coud'e Echelle spectrometer -: III.: The complete Long Camera survey results

被引:64
作者
Endl, M
Kürster, M
Els, S
Hatzes, AP
Cochran, WD
Dennerl, K
Döbereiner, S
机构
[1] Univ Vienna, Inst Astron, A-1180 Vienna, Austria
[2] Univ Texas, McDonald Observ, Austin, TX 78712 USA
[3] European So Observ, Santiago 19, Chile
[4] Thuringer Landessternwarte Tautenburg, D-07778 Tautenburg, Germany
[5] Isaac Newton Grp Telescopes, Santa Cruz De La Palma 38700, Spain
[6] Max Planck Inst Extraterr Phys, D-85748 Garching, Germany
[7] Univ Heidelberg, Inst Theoret Astrophys, D-69121 Heidelberg, Germany
基金
美国国家科学基金会;
关键词
stars : planetary systems; stars : binaries : spectroscopic; stars; low-mass; brown dwarfs; techniques : radial velocities;
D O I
10.1051/0004-6361:20020937
中图分类号
P1 [天文学];
学科分类号
0704 ;
摘要
We present the complete results of the planet search program carried out at the ESO Coude Echelle Spectrometer (CES) on La Silla, using the Long Camera from Nov. 1992 to April 1998. The CES survey has monitored 37 late-type (F8V - M5V) stars in the southern hemisphere for variations in their differential radial velocities (RV) in order to detect Doppler reflex motions caused by planetary companions. This led to the discovery of the first extrasolar planet in an Earth-like orbit around the young (ZAMS) and active G0V star iota Horologii (Kurster et al. 2000). Here we present the RV results for all survey stars and perform a statistical examination of the whole data-set. Each star is tested for RV variability, RV trends (linear and non-linear) and significant periodic signals. beta Hyi and epsilon Ind are identified as long-term, low-amplitude RV variables. Furthermore, for 30 CES survey stars we determine quantitative upper mass-limits for giant planets based on our long-term RV results. We find that the CES Long Camera survey would have detected short-period ("51 Peg-type") planets around all 30 stars but no planets with m sin i < 1 M-Jup at orbital separations larger than 2 AU. Finally, we demonstrate that the CES planet search can be continued without applying velocity corrections to the RV results coming from the currently installed Very Long Camera at the CES.
引用
收藏
页码:671 / 690
页数:20
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