The Search for Stellar Companions to Exoplanet Host Stars Using the CHARA Array
The Search for Stellar Companions to Exoplanet Host Stars Using the CHARA Array
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DOI：
10.1086/588653
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发表时间：
2008-03
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影响因子：
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通讯作者：
E. Baines;H. Mcalister;T. Brummelaar;N. Turner;J. Sturmann;L. Sturmann;S. Ridgway
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文献类型：
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作者：
E. Baines;H. Mcalister;T. Brummelaar;N. Turner;J. Sturmann;L. Sturmann;S. Ridgway
大多数系外行星都是通过径向速度研究发现的，这对轨道倾角本质上不敏感。干涉测量的观测将显示一个恒星伴星的证据，如果它是足够明亮的，无论倾斜。使用CHARA阵列，我们观察了22颗系外行星宿主恒星，以寻找可能伪装成行星系统的低倾角轨道上的恒星同伴。虽然没有发现明确的恒星伴星，但通过研究直径与校准的视星群的误差以及寻找分离的边缘包，可以排除每个系外行星系统的某些次级光谱类型。
Most exoplanets have been discovered via radial velocity studies, which are inherently insensitive to orbital inclination. Interferometric observations will show evidence of a stellar companion if it is sufficiently bright, regardless of the inclination. Using the CHARA Array, we observed 22 exoplanet host stars to search for stellar companions in low-inclination orbits that may be masquerading as planetary systems. While no definitive stellar companions were discovered, it was possible to rule out certain secondary spectral types for each exoplanet system observed by studying the errors in the diameter fit to calibrated visibilities and by searching for separated fringe packets.