McCook & Sion星表中DA白矮星的光谱分析
Spectroscopic analysis of DA white dwarfs from the McCook & Sion catalog
摘要：
几年来，我们一直在收集DA白矮星的光谱，以研究和定义鲸鱼座ZZ不稳定带。然而，我们最近扩大了这项调查，包括所有的DA白矮星在麦库克和锡永目录下降到一个限制的视觉等V=17.5。我们在这里提出的光谱分析超过1000 DA白矮星从这个正在进行的调查。我们有几个特别感兴趣的领域，最值得注意的是热DAO白矮星，鲸鱼座ZZ不稳定带，和DA+dM双星系统。此外，我们提出了一个比较我们的样品与其他大型调查的DA白矮星，特别注意的质量分布作为有效温度的函数的集合属性。
英文摘要：
For some years now, we have been gathering optical spectra of DA white dwarfs in an effort to study and define the empirical ZZ Ceti instability strip. However, we have recently expanded this survey to include all the DA white dwarfs in the McCook & Sion catalog down to a limiting visual magnitude of V=17.5. We present here a spectroscopic analysis of over 1000 DA white dwarfs from this ongoing survey. We have several specific areas of interest most notably the hot DAO white dwarfs, the ZZ Ceti instability strip, and the DA+dM binary systems. Furthermore, we present a comparison of the ensemble properties of our sample with those of other large surveys of DA white dwarfs, paying particular attention to the distribution of mass as a function of effective temperature.
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