Title: An Empirical Correlation of $T_{\rm max}$ - $M_{\rm WD}$ of Dwarf Novae and The Average White Dwarf Mass in Cataclysmic Variables in the Galactic Bulge Show Chinese title

Title: 矮新星$T_{\rm max}$ - $M_{\rm WD}$的经验相关性以及银河系晕中激变变星的平均白矮星质量

Abstract: The mean white dwarf (WD) mass in the Galactic bulge cataclysmic variables (CVs) was measured by applying the the shock temperature-WD mass correlation of magnetic cataclysmic variables (mCVs) to the Galactic Bulge X-ray Emission (GBXE) spectra. However, the resulting mean WD mass is lower than that of the local CVs. This discrepancy could be explained by the dominating sources in the GBXE are non-mCVs instead of mCVs. In this work, we conduct an thorough investigation on the X-ray spectra of local DNe from \suzaku\ archives, and derive semi-empirical correlations between the shock temperature $T_{\rm max}$, the flux ratio of \fec\ to \feb\ lines, and WD mass for quiescent, non-magnetic CVs. By applying these correlations to the GBXE, we derive the average WD mass of CVs in the Galactic bulge to be $0.81\pm 0.07M_\odot$. This value is consistent with previous optical measurements of WD mass in local CVs. Show Chinese abstract

Abstract: 星系核球爆发变星（CVs）中的平均白矮星（WD）质量是通过将磁性爆发变星（mCVs）的激波温度-WD质量相关性应用于银河系核球X射线辐射（GBXE）光谱来测量的。 然而，所得的平均WD质量低于本地CVs的值。 这种差异可能是因为GBXE中的主要源是非mCVs而不是mCVs。 在本工作中，我们对来自\suzaku 档案的本地新星（DNe）的X射线光谱进行了深入研究，并推导出激波温度$T_{\rm max}$、\fec 线与\feb 线的流量比与WD质量之间的半经验相关性，适用于静止的非磁性CVs。 通过将这些相关性应用于GBXE，我们得出银河系核球中CVs的平均WD质量为$0.81\pm 0.07M_\odot$。 这个值与本地CVs中WD质量的先前光学测量结果一致。