论文标题
Zwicky瞬态设施和球形簇：补充大型麦哲伦云样品的异常头孢虫的周期亮度和周期性关系
Zwicky Transient Facility and Globular Clusters: The Period-Luminosity and Period-Wesenheit Relations for Anomalous Cepheids Supplemented with Large Magellanic Cloud Sample
论文作者
论文摘要
我们介绍了基本模式异常头孢虫的第一个Gri频段周期 - luminity（PL）和周期 - 旋转（PW）关系。这些PL和PW关系来自球状簇M92和大麦哲伦云中五个异常头的组合样品，它们的距离均准确至〜1％，可从文献中获得。如前所述，我们的G频段PL关系类似于B波段的关系。我们将PL和PW关系应用于在矮星系火山口II中发现的异常头孢虫，并发现比基于RR Lyrae的最近测量更大但一致的距离模量。即使由于少量异常的头孢虫，我们对Gri波段PL和PW关系的校准也对矮星系的距离测量很有用。
We present the first gri-band period-luminosity (PL) and period-Wesenheit (PW) relations for the fundamental mode anomalous Cepheids. These PL and PW relations were derived from a combined sample of five anomalous Cepheids in globular cluster M92 and the Large Magellanic Cloud, both of which have distance accurate to ~1% available from literature. Our g-band PL relation is similar to the B-band PL relation as reported in previous study. We applied our PL and PW relations to anomalous Cepheids discovered in dwarf galaxy Crater II, and found a larger but consistent distance modulus than the recent measurements based on RR Lyrae. Our calibrations of gri-band PL and PW relations, even though less precise due to small number of anomalous Cepheids, will be useful for distance measurements to dwarf galaxies.
