A Rotating Disk in the HH 111 Protostellar System

Abstract

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.

16 pages including 5 figures

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Cited by in corpus (16)

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• Does Magnetic Field-Rotation Misalignment Solve the Magnetic Braking Catastrophe in Protostellar Disk Formation?
• Rotationally-supported disks around Class I sources in Taurus: disk formation constraints
• ALMA Results of the Pseudodisk, Rotating disk, and Jet in Continuum and HCO+ in the Protostellar System HH 212
• Observations of Infalling and Rotational Motions on a 1,000-AU Scale around 17 Class 0 and 0/I Protostars: Hints of Disk Growth and Magnetic Braking?
• ALMA Dust Polarization Observations of Two Young Edge-on Protostellar Disks
• On the Role of Pseudodisk Warping and Reconnection in Protostellar Disk Formation in Turbulent Magnetized Cores
• Effect of Angular Momentum Alignment and Strong Magnetic Fields on the Formation of Protostellar Disks
• Observation of rotation in star forming regions: clouds, cores, disks, and jets
• Disk structure around the Class I protostar L1489 IRS revealed by ALMA: a warped disk system
• The Co-evolution of Disk and Star in Embedded Stages: The Case of the Very Low-mass Protostar
• Probing Episodic Accretion in Very Low Luminosity Objects
• Angular momentum loss in the envelope-disk transition region of HH 111 protostellar system: evidence for magnetic braking?
• A Pseudodisk Threaded with a Toroidal and Pinched Poloidal Magnetic Field Morphology in the HH 211 Protostellar System
• Two confirmed class I very low-mass objects in Taurus
• Very Large Array Ammonia Observations of the HH 111/HH 121 Protostellar System: a Detection of a New Source With a Peculiar Chemistry