arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2104.12439astro-ph.SR
收藏

UBVRI对矮新星RX闪烁的观测

UBVRI observations of the flickering of the dwarf nova RX And

R. K. Zamanov, G. Nikolov, A. T. Georgieva

备注：
6 pages, accepted in Bulgarian Astronomical Journal
阅读 PDF
arXiv 页面 ↗HTML 原文 ↗

摘要：

我们报告的闪烁变化的矮新星RX和五个波段（UBVRI）的两个晚上的观测。在2019年10月25日，恒星的亮度为$B\approx 13.9$等，闪烁的幅度为0.47等，我们估计闪烁源温度$T_{fl} = 10700 \pm 400$ K和半径$R_{fl} =0.046 \pm 0.004$ $R_\odot$。在2020年1月2日，这颗恒星的亮度约为3等（$B \approx 10.7$），闪烁的幅度明显较低（0.07等），我们推导出闪烁源$T_{fl} = 9600 \pm 700$ K和半径$R_{fl} = 0.098 \pm 0.009$ $R_\odot$。结果表明，恒星的3个星等增亮使闪烁源的半径增加了一倍。这些数据可应作者的要求提供。

英文摘要：

We report observations of the flickering variability of the dwarf nova RX And in five bands (UBVRI) on two nights. On 25 October 2019 the brightness of the star was $B\approx 13.9$ mag, the amplitude of the flickering was 0.47 mag, and we estimate for the flickering source temperature $T_{fl} = 10700 \pm 400$ K, and radius $R_{fl} =0.046 \pm 0.004$ $R_\odot$. On 2 January 2020, the star was about 3 magnitudes brighter ($B \approx 10.7$), the amplitude of the flickering was significantly lower (0.07 mag) and we derive for the flickering source $T_{fl} = 9600 \pm 700$ K, and radius $R_{fl} = 0.098 \pm 0.009$ $R_\odot$. The results indicate that 3 magnitudes brightening of the star doubled the radius of the flickering source. The data are available upon request from the authors.

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。

↑