论文标题
Zwicky瞬态设施和球形簇：黄色后轴向轴向分支星星的GR波段绝对大小的校准
Zwicky Transient Facility and Globular Clusters: Calibration of the gr-Band Absolute Magnitudes for the Yellow Post-Asymptotic-Giant-Branch Stars
论文作者
论文摘要
我们介绍了基于Zwicky瞬态设施的时间序列观测值的G型和R波段中黄色后轴向巨型分支（PAGB）恒星的第一个绝对校准。使用位于球状簇中的四个黄色PAGB恒星（一个非变化的恒星和三个II型头孢菌）对这些绝对大小进行校准。通过使用算术平均值和线性回归，我们为黄色PAGB星的GR波段绝对大小提供了两个校准。我们证明，线性回归为黄色PAGB星的G波段绝对幅度提供了更好的拟合。这些校准的GR波段绝对幅度有可能用作时间域概要天空调查时代的总体II距离指标。
We present the first absolute calibration for the yellow post-asymptotic-giant-branch (PAGB) stars in the g- and r-band based on time-series observations from the Zwicky Transient Facility. These absolute magnitudes were calibrated using four yellow PAGB stars (one non-varying star and three Type II Cepheids) located in the globular clusters. We provide two calibrations of the gr-band absolute magnitudes for the yellow PAGB stars, by using an arithmetic mean and a linear regression. We demonstrate that the linear regression provides a better fit to the g-band absolute magnitudes for the yellow PAGB stars. These calibrated gr-band absolute magnitudes have a potential to be used as population II distance indicators in the era of time-domain synoptic sky surveys.
