2011ApJ...741...62L -
Astrophys. J., 741, 62 (2011/November-1)
A rotating disk in the HH 111 protostellar system.
LEE C.-F.
Abstract (from CDS):
The HH 111 protostellar system is a young Class I system with two sources, VLA 1 and VLA 2, at a distance of 400 pc. Previously, a flattened envelope has been seen in C18O to be in transition to a rotationally supported disk near the VLA 1 source. The follow-up study here is to confirm the rotationally supported disk at 2-3 times higher angular resolutions, at ∼0".3 (or 120 AU) in 1.33 mm continuum, and ∼0".6 (or 240 AU) in 13CO (J = 2-1) and 12CO (J = 2-1) emission obtained with the Submillimeter Array. The 1.33 mm continuum emission shows a resolved dusty disk associated with the VLA 1 source perpendicular to the jet axis, with a Gaussian deconvolved size of ∼240 AU. The 13CO and 12CO emissions toward the dusty disk show a Keplerian rotation, indicating that the dusty disk is rotationally supported. The density and temperature distributions in the disk derived from a simple disk model are found to be similar to those found in bright T Tauri disks, suggesting that the disk can evolve into a T Tauri disk in the late stage of star formation. In addition, a hint of a low-velocity molecular outflow is also seen in 13CO and 12CO coming out from the disk.
Abstract Copyright:
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Journal keyword(s):
circumstellar matter - ISM: individual: HH 111 - stars: formation
Simbad objects:
15
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