The EXPRES Stellar-Signals Project is providing sets of high-fidelity, spectroscopic and photometric observations to enable direct comparisons of various approaches for disentangling stellar signals and true radial velocities (RVs). We will provide all EXPRES RVs, meta data, and activity indicators as well as high-precision photometric data from the Fairborn Automatic Photoelectric Telescopes (APTs) for HD 101501, HD 34411, HD 217014, and HD 10700. Intrinsic stellar variability and the resulting apparent RVs are widely believed to dominate the error budget for extremely precise radial-velocity (EPRV) measurements. Several new methods to disentangle photospheric velocities from Keplerian velocities are being developed throughout the EPRV community. In addition to releasing data sets for testing these methods, the EXPRES Stellar-Signals Project will publish a summary of the current state of the field circa 2020 to guide next steps toward mitigating photospheric velocities in EPRV ...

中文翻译：

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EXPRES恒星信号项目。一，数据说明

EXPRES恒星信号项目将提供高保真，光谱和光度学观测数据集，以便能够对散开恒星信号和真实径向速度（RV）的各种方法进行直接比较。我们将提供来自Fairborn自动光电望远镜（APT）的HD 101501，HD 34411，HD 217014和HD 10700的所有EXPRES RV，元数据和活动指标以及高精度光度数据。内在恒星变异性及其结果人们普遍认为，对于极精确的径向速度（EPRV）测量，明显的RV在误差预算中占主导地位。在整个EPRV社区中，正在开发几种使光球速度与Keplerian速度分离的新方法。除了发布用于测试这些方法的数据集之外，