2022
DOI: 10.48550/arxiv.2204.09163
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Discovery of a 500 au Protobinary in the Massive Prestellar Core G11.92-0.61 MM2

C. J. Cyganowski,
J. D. Ilee,
C. L. Brogan
et al.

Abstract: We present high-resolution ( 160 au) Atacama Large Millimeter/submillimeter Array (ALMA) 1.3 mm observations of the high-mass prestellar core candidate G11.92−0.61 MM2, which reveal that this source is in fact a protobinary system with a projected separation of 505 au. The binary components, MM2E and MM2W, are compact (radii<140 au) sources within the partially optically thick dust emission with α 0.9 cm−1.3 mm =2.47-2.94. The 1.3 mm brightness temperatures, T b =68.4/64.6 K for MM2E/MM2W, imply internal heati… Show more

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