论文标题
Zwicky瞬态设施调查的双模式头孢
Double Mode Cepheids from the Zwicky Transient Facility Survey
论文作者
论文摘要
多模式头孢虫同时脉动以一种以上的振荡方式脉动。它们提供了一种独立的手段来检验恒星模型和脉动理论。它们也可以用于得出金属性。近年来，随着发现大量银河系双模式头膜的发现，已知的多模式头孢菌的数量已大大增加。迄今为止，在银河凸出和磁盘中已经检测到209个双模头，主要基于光学引力透镜实验（OGLE）目录。在本文中，我们根据Zwicky Transient设施数据发布5进行了全面搜索北方天空中的双模头，我们以银河系的方式找到了72个此类物体。 OGLE目录中已经包含的30个样本对象的周期与OGLE期间非常一致。我们的新头孢虫的周期比与已知的双模式头孢菌素的周期比相一致，这在所谓的“彼得森图”中证明了其基因座。与OGLE相比，我们的双模式头样品的完整性约为71 \％。 Zwicky瞬态设施的时间抽样大大改善，提供了重要的范围，可以找到更多的双模式头孢虫，尤其是在发行版的短期末端。
Multi-mode Cepheids pulsate simultaneously in more than one mode of oscillation. They provide an independent means to test stellar models and pulsation theories. They can also be used to derive metallicities. In recent years, the number of known multi-mode Cepheids has increased dramatically with the discovery of a large number of Galactic double-mode Cepheids. To date, 209 double-mode Cepheids have been detected in the Galactic bulge and disk, mostly based on the Optical Gravitational Lensing Experiment's (OGLE) catalog. In this paper, we conduct a comprehensive search for double-mode Cepheids in the northern sky based on Zwicky Transient Facility Data Release 5. We found 72 such objects in the Milky Way. The periods of the 30 sample objects already included in the OGLE catalog show excellent agreement with the OGLE periods. The period ratios of our new Cepheids are consistent with those of known double-mode Cepheids, as evidenced by their loci in the so-called `Petersen diagram'. Compared with OGLE, the completeness of our double-mode Cepheid sample is around 71\%. The much improved temporal sampling of the Zwicky Transient Facility offers significant scope to find more double-mode Cepheids, especially at the distribution's short-period end.
