论文标题
Andicam I和J带监测明亮的银河后期型星星
ANDICAM I and J band monitoring of bright inner Galactic late-type stars
论文作者
论文摘要
这里呈现了57个内部银河后期型星的I和J带中的时间序列光度法，高度可探测的红色超级巨星（RSG）星。 38％的样品表现出显着的光度变化。 I和J频段的变化似乎是相关的，Deltai = Deltaj X 2.2，Deltai变化范围从0.04-1.08 mag，Deltaj变化范围为0.03-0.52 mag。新的短期（<1000 d）可以估计为8星，范围为167-433 d。这项工作证实了样品不会被大振幅渐近巨型分支（AGB）恒星污染。此外，尽管距离发生了较大的误差，但周期luminusity图表明，样品的序列与已知的银河系RSG相同。
Time-series photometry in I and J band of 57 inner Galactic late-type stars, highly-probable red supergiant (RSG) stars, is here presented. 38% of the sample presents significant photometric variations. The variations in I and J band appear to be correlated, with DeltaI = DeltaJ x 2.2, DeltaI variations ranging from 0.04-1.08 mag, DeltaJ variations from 0.03-0.52 mag. New short periods (< 1000 d) could be estimated for 8 stars and range from 167-433 d. This work confirms that the sample is not contaminated by large-amplitude Asymptotic Giant Branch (AGB) stars. Furthermore, despite the large errors in distance, the period-luminosity diagram suggests that the sample is populating the same sequence as the known Galactic RSGs.
