G328: A Small-Amplitude Red Variable with a Period Near One Day

Bao-An Yao; Chang-Jun Shen; Chun-Sheng Zhang; Han-Ming Hu; Qing Lin

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G328: A Small-Amplitude Red Variable with a Period Near One Day

机译：G328：小振幅红色变量，周期接近一天

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G328 = A65 = L3314 (V = 13.83, B - V = 1.91) is a field star in the direction of the globular cluster M4. If we take E(B - V) = 0.40, then its (B - V)_0 = 1.51, corresponding to a spectral type of K5Ⅲ if it is a giant star; or of dM2 if it is a dwarf. Observations at both the MSSSO and Yunnan Observatory have shown that G328 is a new variable with peak to peak amplitude approx = 0.05 mag in V. While it is not unusual for so red a star to be a variable, special attention must be paid to its short period of about one day. If the variability is due to pulsation, the spectral type and luminosity as well as effective temperature should be determined in order to compare it with Xiong's theory.

机译：G328 = A65 = L3314（V = 13.83，B-V = 1.91）是球状星团M4方向上的场星。如果我们使E（B-V）= 0.40，则其（B-V）_0 = 1.51，如果它是巨星，则对应于K5Ⅲ的光谱类型；或dM2（如果是矮人）。在MSSSO和云南天文台的观测都表明，G328是一个新变量，其峰峰值幅度在V中约为0.05 mag。尽管如此红的恒星成为变量并不罕见，但必须特别注意它短约一天的时间。如果变化是由于脉动引起的，则应确定光谱类型和光度以及有效温度，以便与熊的理论进行比较。

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来源
《Chinese Journal of Astronomy and Astrophysics》 |2006年第5期|p.517-520|共4页
作者
Bao-An Yao; Chang-Jun Shen; Chun-Sheng Zhang; Han-Ming Hu; Qing Lin;
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作者单位

Shanghai Astronomical Observatory, Chinese Academy of Sciences, Shanghai 200030;

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原文格式 PDF
正文语种 eng
中图分类天文学;
关键词
stars: variables; stars: individual (G328);

机译：星号：变量;星号：个人（G328）;

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G328: A Small-Amplitude Red Variable with a Period Near One Day

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