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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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Osservazione e dati astrometrici
| Costellazione: | Orione |
| Ascensione retta: | 05h01m19.58s |
| Declinazione: | +14°07'03.0" |
| Magnitudine apparente: | 7.924 |
| Moto proprio RA: | 19.6 |
| Moto proprio Dec: | -30.2 |
| B-T magnitude: | 8.974 |
| V-T magnitude: | 8.011 |
Cataloghi e designazioni:
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