论文标题
从LAMOST&PTF调查中确定的短期光谱和黯然失色的二进制文件的目录
A Catalog of Short Period Spectroscopic and Eclipsing Binaries Identified from the LAMOST & PTF Surveys
论文作者
论文摘要
二进制文件在确定恒星参数和探索恒星演化模型中起关键作用。我们利用了大型天空区多对象光纤光纤望远镜(Lamost)和Palomar Transient Factory(PTF)勘测的观察结果,构建了88种带有光谱信息的二进制文件的目录。构建了软件管道,以通过检查其光曲线来识别二进制候选者。二进制的轨道周期源自Lomb-Scargle方法。新的过滤器\ textit {flat test}可以识别黯然失色的二进制文件的关键区别特征。我们通过在光曲线上应用傅立叶分析来对黯然失色的二进制文件进行分类。在所有二进制恒星中,首次将13个二进制文件确定为黯然失色的二进制文件。该目录包含信息:位置,主要黯然失色的幅度和时间,黯然失色的深度,光度法和径向速度观察的数量,最大的径向速度差,二进制差异,可观察到的明星$ t _ {\ rm eff} $的有效温度,以及可观察到的STAR log star log log star log \ emph \ emph emph \ emph f}的表面。假阳性概率是通过使用Monte Carlo模拟和SDSS Stripe 82标准目录的实际数据来计算的。目录中的二进制文件主要不到一天。周期分布显示了0.22天的截止,这与以这种周期折射二进制旋转的概率相一致。
Binaries play key roles in determining stellar parameters and exploring stellar evolution models. We build a catalog of 88 eclipsing binaries with spectroscopic information, taking advantage of observations from both the Large Sky Area Multi-Object fiber Spectroscopic Telescope (LAMOST) and the Palomar Transient Factory (PTF) surveys. A software pipeline is constructed to identify binary candidates by examining their light curves. The orbital periods of binaries are derived from the Lomb-Scargle method. The key distinguishing features of eclipsing binaries are recognized by a new filter \textit{Flat Test}. We classify the eclipsing binaries by applying Fourier analysis on the light curves. Among all the binary stars, 13 binaries are identified as eclipsing binaries for the first time. The catalog contains information: position, primary eclipsing magnitude and time, eclipsing depth, the number of photometry and radial velocity observations, largest radial velocity difference, binary type, the effective temperature of observable star $T_{\rm eff}$, and surface gravity of observable star log \emph{g}. The false-positive probability is calculated by using both a Monte Carlo simulation and real data from the SDSS Stripe 82 Standard Catalog. The binaries in the catalog are mostly with a period of less than one day. The period distribution shows a 0.22-day cut-off which is consistent with the low probability of an eclipsing binary rotating with such a period.