Fig. 5.
Surface flux of the Ca ii emission line, |$F^{\prime }_{\lambda 8662}$|, as a function of mass accretion rate, |$\dot{M}$|. The circle symbols represent the PMS stars in the molecular clouds, and the square symbols are the PMS stars in the moving groups. The open symbols show the objects with a broad Ca ii IRT emission line (FWHM > 100 km s−1), and the filled symbols represent the objects with a narrow Ca ii IRT emission line (FWHM ≤ 100 km s−1).