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 an...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.展开更多
The results of the survey of low-mass star formation in high-galactic latitude molecular clouds, especially those of the translucent category, based on the ROSAT All-Sky Survey are presented. Six new WTTS candidates h...The results of the survey of low-mass star formation in high-galactic latitude molecular clouds, especially those of the translucent category, based on the ROSAT All-Sky Survey are presented. Six new WTTS candidates have been discovered at high-galactic latitude, a-mong which, two are found to be possibly associated with translucent molecular clouds MBM展开更多
基金Supported by the National Natural Science Foundation of China.
文摘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.
文摘The results of the survey of low-mass star formation in high-galactic latitude molecular clouds, especially those of the translucent category, based on the ROSAT All-Sky Survey are presented. Six new WTTS candidates have been discovered at high-galactic latitude, a-mong which, two are found to be possibly associated with translucent molecular clouds MBM
