The IC1396N proto-cluster at a scale of 250 AU

Abstract

We investigate the mm-morphology of IC1396N with unprecedented spatial resolution to analyze its dust and molecular gas properties, and draw comparisons with objects of similar mass. We have carried out sensitive observations in the most extended configurations of the IRAM Plateau de Bure interferometer, to map the thermal dust emission at 3.3 and 1.3mm, and the emission from the $J$=13${}_k\to 12_k$ hyperfine transitions of methyl cyanide (CH${}_3$CN). We unveil the existence of a sub-cluster of hot cores in IC1396N, distributed in a direction perpendicular to the emanating outflow. The cores are embedded in a common envelope of extended and diffuse dust emission. We find striking differences in the dust properties of the cores ($\beta \simeq$ 0) and the surrounding envelope ($\beta \simeq$ 1), very likely testifying to differences in the formation and processing of dust material. The CH${}_3$CN emission peaks towards the most massive hot core and is marginally extended in the outflow direction.

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Cited by in corpus (20)

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• Subarcsecond Submillimeter Imaging of the Ultracompact HII Region G5.89-0.39
• Physical structure and water line spectrum predictions of the Intermediate Mass protostar OMC2-FIR4
• First Hot Corino detected around an Isolated Intermediate-Mass Protostar: Cep\,E-mm
• Physical structure of the envelopes of intermediate-mass protostars
• The hot core towards the intermediate mass protostar NGC7129 FIRS 2: Chemical similarities with Orion KL
• IRAS 22198+6336: Discovery of an Intermediate-Mass Hot Core
• Triggered star formation and Young Stellar Population in Bright-Rimmed Cloud SFO 38
• Chemical study of intermediate-mass (IM) Class 0 protostars. CO depletion and N2H+ deuteration
• On the nature of outflows in intermediate-mass protostars: a case study of IRAS 20050+2720
• The stellar population and complex structure of the bright-rimmed cloud IC 1396N
• Dissecting an intermediate-mass (IM) protostar: Chemical differentiation in IC1396N
• Protostellar clusters in intermediate-mass (IM) star forming regions
• The SOFIA Massive (SOMA) Star Formation Survey. III. From Intermediate- to High-Mass Protostars
• Close encounters of the protostellar kind in IC 1396N
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• High angular resolution imaging of the circumstellar material around intermediate mass (IM) stars
• Sequential clustering of star formation in IC 1396