| Photometric Monitoring of ROSAT-Selected Weak Line T Tauri Stars |
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| 作者姓名： | Li-Feng Xing Xiao-Bin Zhang and Jian-Yan Wei National Astronomical Observatories Chinese Academy of Sciences Beijing |
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| 作者单位： | Li-Feng Xing，Xiao-Bin Zhang and Jian-Yan Wei National Astronomical Observatories，Chinese Academy of Sciences，Beijing 100012; Department of Technology and Physics，Zhengzhou University of Light Industry，Zhengzhou 450002 Graduate School of Chinese Academy of Sciences，Beijing 100049 |
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| 基金项目： | Supported by the National Natural Science Foundation of China. |
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| 摘 要： | We monitored the light curves of 22 weak-line T Tauri stars (WTTSs) discovered among the X-ray sources in the field of the Taurus-Auriga cloud. For 12 of the 22 WTTSs photometric periodic variability is confirmed and their rational periods are determined using Phase Dispersion Minimization (PDM) and Fourier analysis. Most of them are found to have periods shorter than one day. This gives further evidence for the spin up of solar-type stars predicted by the models of angular momentum evolution of pre-main sequence stars.
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| 关 键 词： | ROSAT WTTS星 Taurus-Auriga星云 光度监测 光弯曲 旋转周期 |
Photometric Monitoring of ROSAT-Selected Weak Line T Tauri Stars |
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| Li-Feng Xing,Xiao-Bin Zhang and Jian-Yan Wei National Astronomical Observatories,Chinese Academy of Sciences,Beijing ,.Photometric Monitoring of ROSAT-Selected Weak Line T Tauri Stars[J].Chinese Journal of Astronomy and Astrophysics,2006,6(6):716-722. |
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| Authors: | Li-Feng Xing Xiao-Bin Zhang Jian-Yan Wei |
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| Institution: | [1]National Astronomical Observatories, Chinese Academy of Sciences, Beijing 100012 [2]Department of Technology and Physics, Zhengzhou University of Light Industry, Zhengzhou 450002 |
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| Abstract: | We monitored the light curves of 22 weak-line T Tauri stars (WTTSs) discovered among the X-ray sources in the field of the Taurus-Auriga cloud. For 12 of the 22 WTTSs photometric periodic variability is confirmed and their rational periods are determined using Phase Dispersion Minimization (PDM) and Fourier analysis. Most of them are found to have periods shorter than one day. This gives further evidence for the spin up of solar-type stars predicted by the models of angular momentum evolution of pre-main sequence stars. |
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| Keywords: | stars: late-type- stars: pre-main sequence- stars: rotation |
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