环联行星径向速度TATOOINE搜索：双线联星样本的行星探测极限-来自Keck I/Hires，Shane/CAT/Hamspec和TNG/Sarg观测的初步结果
The Radial Velocity TATOOINE Search for Circumbinary Planets: Planet Detection Limits for a Sample of Double-lined Binary Stars - Initial Results from Keck I/Hires, Shane/CAT/Hamspec and TNG/Sarg Observations
摘要：
我们目前的第一次和正在进行的环联行星径向速度调查的初步结果。一种新的径向速度技术采用碘吸收细胞，我们实现了前所未有的RV精度高达2米/秒的双线双星。在2003-2008年期间，Keck I/Hires，TNG/Sarg和Shane/CAT/Hamspec望远镜/摄谱仪收集的高分辨率光谱使我们能够导出RV并计算10个双线双星的行星探测极限。对于这个初始目标样本，我们可以排除在动态稳定轨道上、质量小至~0.3至3兆焦耳、轨道周期长达~5.3年的行星。尽管所提供的恒星样本太小，无法得出任何强有力的结论，但很明显，寻找环双星行星现在在技术上是可能的，最终将为行星形成理论提供新的限制。
英文摘要：
We present preliminary results of the first and on-going radial velocity survey for circumbinary planets. With a novel radial velocity technique employing an iodine absorption cell we achieve an unprecedented RV precision of up to 2 m/s for double-lined binary stars. The high resolution spectra collected with the Keck I/Hires, TNG/Sarg and Shane/CAT/Hamspec telescopes/spectrographs over the years 2003-2008 allow us to derive RVs and compute planet detection limits for ten double-lined binary stars. For this initial sample of targets, we can rule out planets on dynamically stable orbits with masses as small as ~0.3 to 3 MJup for the orbital periods of up to ~5.3 years. Even though the presented sample of stars is too small to make any strong conclusions, it is clear that the search for circumbinary planets is now technique-wise possible and eventually will provide new constraints for the planet formation theories.
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