摘要
Optical spectroscopic identification of X-ray selected WTTS candidates in the Taurus-Auriga outskirts on the basis of ROSAT pointing observations, has resulted in the discovery of 4 WTTS and several other Li-rich sources. This paper gives the R magnitudes, coordinates (J2000) from USNO (V1.0), spectral type classifications, equivalent widths of Li I absorption and H. emission lines of all the X-ray sources investigated, and the proper motions and parallaxes of some of them, as well as the spectra of the newly discovered WTTS. For the first time, the spatial distribution of a rather complete, ROSAT-discovered sample of WTTS, including those identified from the ROSAT All-Sky Survey and PSPC pointing observations around one of the nearby star-forming regions has been provided, together with a preliminary analysis.
Optical spectroscopic identification of X-ray selected WTTS candidates in the Taurus-Auriga outskirts on the basis of ROSAT pointing observations, has resulted in the discovery of 4 WTTS and several other Li-rich sources. This paper gives the R magnitudes, coordinates (J2000) from USNO (V1.0), spectral type classifications, equivalent widths of Li I absorption and H. emission lines of all the X-ray sources investigated, and the proper motions and parallaxes of some of them, as well as the spectra of the newly discovered WTTS. For the first time, the spatial distribution of a rather complete, ROSAT-discovered sample of WTTS, including those identified from the ROSAT All-Sky Survey and PSPC pointing observations around one of the nearby star-forming regions has been provided, together with a preliminary analysis.
基金
国家自然科学基金
