发表机构
Universidade Federal do Rio Grande do Sul; Universidade de São Paulo（南里奥格兰德联邦大学; 圣保罗大学）
机构由 AI 辅助整理，请以论文原文为准。AI 中文总结
该研究基于TESS第102扇区测光数据测定激变变星测光周期，分析1557颗星，检测到多类变星的周期变化，首次测定565颗星的光学变异性周期，还发现了周期间隙等结果，并与单白矮星自转周期分布作比较。
AI 中文摘要
我们基于凌日系外行星勘测卫星（TESS）第102扇区的测光数据，给出了一组激变变星的相干且稳定的测光周期测定结果。我们总共分析了1557颗激变变星，在1362个天体中检测到周期性变化，包括286个食变或椭球变系统、63个极型星和135个中间极型星。特别地，我们首次测定了565颗激变变星的光学变异性周期。由于TESS的像素大小为21x21
英文摘要
We present a sample of coherent and stable photometric period determinations for cataclysmic variables, based on TESS photometry through sector 102. We analyzed a total of 1554 cataclysmic variable stars and detected periodic variations in 1362 objects, including 286 eclipsing or ellipsoidal-variation systems, 63 polars, and 135 intermediate polars. In particular, we present the first determination of the optical variability period for 564 cataclysmic variables. Due to the 21x21" pixel size of TESS, we tested whether the variability was coming from the cataclysmic variable and not from a nearby star. For the intermediate polars, we detected spin periods in addition to orbital periods for 83 systems. We detect a clear period gap between ~2 and ~3 h in the eclipsing sample, consistent with previous work. The gap remains for the complete sample of photometric variability periods. There is no apparent gap in the orbital period distribution for intermediate polars. Finally, the median of the photometric period distribution of our complete sample of cataclysmic variables is 3.681 h. Comparing this to the distribution of rotation periods for likely single white dwarfs, we find a similar range, with a median photometric period of 6.803~h.
Comments23 pages, 16 figues, 5 tables
