标题： 哈勃空间望远镜 WFPC2 F606W 和 F814W 光度的实证校准 显示英文标题

标题： Empirical Calibration of Hubble Space Telescope WFPC2 F606W and F814W Photometry

摘要： 使用来自Groth条带的恒星样本的地基V和I测光数据，我们获得了F606W和F814W哈勃空间望远镜WFPC2滤光器在0.5<V-I<4.5范围内的首次经验校准。我们以需要应用到目前使用的两种合成校准上的修正形式呈现结果。发现这两种校准都需要对零点和色散项进行修正。 显示英文摘要

摘要： Using the ground-based V and I photometry of a sample of stars from the Groth Strip, we obtain the first empirical calibration of the F606W and F814W Hubble Space Telescope WFPC2 filters for 0.5<V-I<4.5. We present results in the form of corrections that need to be applied to the two synthetic calibrations currently in use. Both calibrations are found to require corrections to zero points and color-terms.