论文标题

在Ogle-IV领域,新的短期三角洲Scuti星星朝银河凸起

New Short-Period Delta Scuti Stars in OGLE-IV Fields toward the Galactic Bulge

论文作者

Pietrukowicz, P., Ratajczak, M., Soszynski, I., Udalski, A., Szymanski, M. K., Ulaczyk, K., Poleski, R., Kozlowski, S., Skowron, J., Skowron, D. M., Mroz, P., Rybicki, K., Iwanek, P., Wrona, M., Gromadzki, M.

论文摘要

我们报告了位于Ogle-IV银河凸出场中的24个令人困惑的短期变量星的分类。恒星是低振幅(<0.05 mag)的多周期对象,其主要周期在22至54分钟之间,仅基于光度法就无法明确建立类型。低分辨率的光谱随访表明所有对象都是主要序列A/F型星。因此,所有变量都是delta sct型脉动器。我们已经将它们添加到了可变星的Ogle-IV集合中。

We report the classification of 24 puzzling short-period variable stars located in OGLE-IV Galactic bulge fields. The stars are low-amplitude (<0.05 mag) multi-periodic objects with dominant periods between 22 and 54 min whose type could not have been unambiguously established based on photometry only. A low-resolution spectroscopic follow-up has shown that all the objects are main sequence A/F-type stars. Thus, all the variables are delta Sct-type pulsators. We have added them to the OGLE-IV Collection of Variable Stars.

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