Imaging and Kinematic Studies of Young Stellar Object Jets in Taurus

摘要: We report on an imaging and kinematic study of the jets outflows emanating from DG Tau, Tau B, FS T CoKu 1. The data are based proper-motion measurements long-slit spectroscopy, deep narrowband [S II] λλ6716, 6731, Hα, continuum images. individual objects their peculiarities discussed in detail. six investigated flows differ each other morphology, spatial extent, degree variations velocity ratio ζ between knot pattern speed flow speed. Possible reasons for these large differences briefly discussed. In strong indicated, while B very small variations, if any, observed (≤7% some sections). together with ζ-values this young stellar object (YSO) jets, pose severe difficulties any model that explains knots by internal shocks resulting variations. Our results YSO strongly indicate a significant fraction mechanisms probably excite shocks. bipolar outflow apparently shows indications highly collimated poorly both lobes. To our knowledge, L1551 IRS 5 is only case where such unusual situation also indicated. About 60'' northeast we have found independent faint 150''-long jetlike oriented approximately perpendicular to jet, which designated C (HH 276).