论文标题
用基本模式RR Lyrae在开普勒字段中评估V波段光度法金属性
Evaluating the V-band Photometric Metallicity with Fundamental Mode RR Lyrae in the Kepler Field
论文作者
论文摘要
这项工作的目的是评估基于从GR波段浅频曲线的V-Band Light-Curves光学转化的V-Band Light-Curves确定的光度金属性[Fe/H]的性能。我们通过使用位于开普勒字段中的基本模式RR Lyrae的一组均匀样本进行了测试。发现在这种光度转化中，颜色是必要的。我们证明了基于校准或转化后的V波段浅曲线的颜色 - 确定的光度法[Fe/H]与光谱[Fe/H]非常吻合。我们还测试了Blazhko rr Lyrae在确定光度法/H]中的影响，并发现Blazhko Rr Lyre可以给出一致的光度[Fe/H]。最后，我们使用我们的光曲线得出了独立的GVR波段[Fe/H] - $ ϕ_ {31} $ - P关系（其中$ ϕ_ {31} $和P分别是傅立叶参数和脉动周期）。 V波段的关系与文献中给出的最新决定非常吻合。
The aim of this work is to evaluate the performance of photometric metallicity [Fe/H], determined based on V-band light-curves photometrically transformed from the gr-band light-curves. We tested this by using a set of homogeneous sample of fundamental mode RR Lyrae located in the Kepler field. It was found that the color-term is necessary in such photometric transformation. We demonstrated that including the color-term the determined photometric [Fe/H] are in good agreement to the spectroscopic [Fe/H], either based on the calibrated or the transformed V-band light-curves. We also tested the impact of Blazhko RR Lyrae in determining the photometric Fe/H], and found that Blazhko RR Lyrae can give consistent photometric [Fe/H]. Finally, we derived independent gVr-band [Fe/H]-$ϕ_{31}$-P relations (where $ϕ_{31}$ and P are Fourier parameter and pulsation period, respectively) using our light-curves. The V-band relation is in good agreement with the most recent determination given in the literature.
