High resolution observations of disks around protostellar sources with the Nobeyama Millimeter Array
We present high spatial resolution observations of disks around young stellar objects in Taurus with the Nobeyama Millimeter Array. A survey of circumstellar disks at 3 mm shows that the 3 mm continuum emission tends to be weaker for embedded sources than for visible T Tauri stars, which is consistent with our previous interpretation of protoplanetary disk formation. The CS gas around L1489 and IRAS 04365+2535 show disk-like structures of ∼1000 AU in radius. A 13CO observation of HL Tau indicates direct evidence of dynamical infalling motion. We discuss the formation of a centrifugally supported viscous accretion disk around HL Tau.
KeywordsProtoplanetary Disk Tauri Star Circumstellar Disk Young Stellar Object IRAS Source
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- Tamura, M., Ohashi, N., Moriarty-Schieven, G., Hayashi, M., Hirano, N. 1994: in Astronomy with Millimeter and Submillimeter Wave Interferometory, IAU Colloquium No. 140, edited by M. Ishiguro & W.J. Welch (Astronomical Society of the Pacific, San Francisco) 268–269Google Scholar
- Tamura, M., Ohashi, N., Hirano, N., Itoh, Y., Moriarty-Schiven, G.H. 1996: in preparationGoogle Scholar