| S1280 and S1284： Two Oscillating Blue Stragglers in the Open Cluster M67 |
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| 作者姓名： | Xiao-Bin Zhang Rong-Xian Zhang and Zhi-Ping Li National Astronomical Observatories Chinese Academy of Sciences Beijing |
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| 作者单位： | Xiao-Bin Zhang，Rong-Xian Zhang and Zhi-Ping Li National Astronomical Observatories，Chinese Academy of Sciences，Beijing 100012 |
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| 摘 要： | We present results of a time-series CCD photometry of two blue stragglers in the open cluster M67 that are also oscillating variables, S1280 and S1284. The observations obtained on 11 nights confirmed the δ Scuti-like variability of the two stars. Four and five main pulsating frequencies are detected for S1280 and S1284, respectively, through a power spectral analysis. A preliminary mode identification indicates that the two stars are both in radial oscillation. Based on the nature of oscillation, the physical parameters of the two stars are determined, and their evolutionary status discussed.
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| 关 键 词： | 天文物理 天文光度 光度测定 星体 |
S1280 and S1284: Two Oscillating Blue Stragglers in the Open Cluster M67 |
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| Xiao-Bin Zhang,Rong-Xian Zhang and Zhi-Ping Li National Astronomical Observatories,Chinese Academy of Sciences,Beijing .S1280 and S1284: Two Oscillating Blue Stragglers in the Open Cluster M67[J].Chinese Journal of Astronomy and Astrophysics,2005,5(6):579-586. |
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| Authors: | Xiao-Bin Zhang Rong-Xian Zhang Zhi-Ping Li |
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| Institution: | National Astronomical Observatories, Chinese Academy of Sciences, Beijing 100012 |
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| Abstract: | |
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| Keywords: | blue straggler- open cluster: individual (M67) -stars: oscillation - stars: individual (S1280 S1284) |
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