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Optical identification and study of X-ray selected weak emission-line T Tauri stars in the Taurus-Auriga outskirts based on ROSAT pointing observations
Optical spectroscopic identification of X-ray selected WTTS (weakemission-line T Tauri stars) candidates in the Taurus-Auriga outskirtson the basis of ROSAT pointing observations, has resulted in thediscovery of 4 WTTS and several other Li-rich sources. This paper givesthe R magnitudes, coordinates (J2000) from USNO (V1.0), spectral typeclassifications, equivalent widths of LiI absorption andHα emission lines of all the X-ray sourcesinvestigated, and the proper motions and parallaxes of some of them, aswell as the spectra of the newly discovered WTTS. For the first time,the spatial distribution of a rather complete, ROSAT-discovered sampleof WTTS, including those identified from the ROSAT All-Sky Survey andPSPC pointing observations around one of the nearby star-forming regionshas been provided, together with a preliminary analysis.
| Optical identification and study of X-ray selected WTTS in the Taurus-Auriga outskirts based on ROSAT pointing observations.
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Наблюдательные данные и астрометрия
| Созвездие: | Персей |
| Прямое восхождение: | 04h03m13.00s |
| Склонение: | +34°50'00.5" |
| Видимая звёздная величина: | 7.631 |
| Расстояние: | 413.223 парсек |
| Собственное движение RA: | 16 |
| Собственное движение Dec: | -21.1 |
| B-T magnitude: | 9.164 |
| V-T magnitude: | 7.758 |
Каталоги и обозначения:
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