类星体样品SDSS-III BOSS的改进分光光度定标
Improved Spectrophotometric Calibration of the SDSS-III BOSS Quasar Sample
摘要：
我们提出了一个模型，从斯隆数字巡天（SDSS-III）重子振荡光谱巡天（BOSS）的第三代类星体观测的分光光度计校准误差，并描述了我们已经开发和应用到这个样本的校正程序。校准误差主要是由于每次曝光期间的大气差异折射和引导偏移。这些修正可能会减少对BOSS类星体的任何研究的系统性，包括使用莱曼- $α$森林测量重子声学振荡。我们的模型表明，平均而言，在BOSS中观测到的类星体通量被3600焦耳的$\sim 19\%$高估，而被10,000焦耳的$\sim 24\%$低估。我们对整个BOSS类星体样本的修正是公开的。
英文摘要：
We present a model for spectrophotometric calibration errors in observations of quasars from the third generation of the Sloan Digital Sky Survey (SDSS-III) Baryon Oscillation Spectroscopic Survey (BOSS) and describe the correction procedure we have developed and applied to this sample. Calibration errors are primarily due to atmospheric differential refraction and guiding offsets during each exposure. The corrections potentially reduce the systematics for any studies of BOSS quasars, including the measurement of baryon acoustic oscillations using the Lyman-$α$ forest. Our model suggests that, on average, the observed quasar flux in BOSS is overestimated by $\sim 19\%$ at 3600 Å and underestimated by $\sim 24\%$ at 10,000 Å. Our corrections for the entire BOSS quasar sample are publicly available.
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