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arXiv 0806.2852astro-ph
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NSV 13983:周期间隙中的一颗新矮新星

NSV 13983: A New Dwarf Nova in the Period Gap

C. Contreras, C. Tappert

摘要:

目标。NSV 13983是根据2005年的一次爆发被归类为矮新星。该系统尚未被光谱学研究。我们试图确认它是一颗矮新星,并确定它的轨道周期。方法.我们推导出的轨道周期,通过使用时间分辨光谱数据来测量径向速度。结果平均光谱显示该系统是一颗处于静止状态的矮新星。由谱线H α和H β的测量得到的径向速度曲线显示出明显的调制,周期为2.76 h。这使得NSV 13983在激变变星的周期分布中位于空区的上边缘之下,意味着它是空区中的第14颗矮新星。

英文摘要:

Aims. NSV 13983 is catalogued as a dwarf nova based on a reported outburst from 2005. The system has not yet been studied spectroscopically. We attempt to confirm its nature as a dwarf nova and determine its orbital period. Methods. We derive the orbital period by using time-resolved spectroscopic data to measure radial velocities. Results. The average spectrum shows evidence that the system is a dwarf nova in quiescence. The radial velocity curves derived from measurements of the spectral lines Hαand Hβ, show a clear modulation with a period of 2.76 h. This places NSV 13983 below the upper edge of the gap in the period distribution of cataclysmic variables, implying that it is the 14th dwarf nova in the gap.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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