Search results for " Galaxy: open clusters and associations: individual: Taurus molecular cloud"

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Optical spectroscopy of X-ray sources in the Taurus molecular cloud: discovery of ten new pre-main sequence stars

2008

We have analyzed optical spectra of 25 X-ray sources identified as potential new members of the Taurus molecular cloud (TMC), in order to confirm their membership in this SFR. Fifty-seven candidates were previously selected among the X-ray sources in the XEST survey, having a 2MASS counterpart compatible with a PMS star based on color-magnitude and color-color diagrams. We obtained high-resolution optical spectra for 7 of these candidates with the SARG spectrograph at the TNG telescope, which were used to search for Li absorption and to measure the Ha line and the radial and rotational velocities; 18 low-resolution optical spectra obtained with DOLORES for other candidate members were used …

Physicstechniques: spectroscopic stars: luminosity function mass function stars: pre-main sequence Galaxy: open clusters and associations: individual: Taurus molecular cloudMolecular cloudAstrophysics (astro-ph)FOS: Physical sciencesAstronomy and AstrophysicsAstrophysicsAstrophysics::Cosmology and Extragalactic AstrophysicsStellar classificationSurface gravityAstrophysicsSpectral lineStarsSettore FIS/05 - Astronomia E AstrofisicaSpace and Planetary ScienceAstrophysics::Solar and Stellar AstrophysicsEmission spectrumMain sequenceAstrophysics::Galaxy AstrophysicsLine (formation)

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