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Hot Core, Outflows, and Magnetic Fields in W43-MM1 (G30.79 FIR 10)

Sridharan, T. K. and Rao, R. and Qiu, K. and Cortes, P. and Li, H. and Pillai, T. and Patel, N. A. and Zhang, Q. (2014) Hot Core, Outflows, and Magnetic Fields in W43-MM1 (G30.79 FIR 10). Astrophysical Journal Letters, 783 (2). Art. No. L31. ISSN 2041-8205. doi:10.1088/2041-8205/783/2/L31.

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We present submillimeter spectral line and dust continuum polarization observations of a remarkable hot core and multiple outflows in the high-mass, star-forming region W43-MM1 (G30.79 FIR 10), obtained using the Submillimeter Array. A temperature of ~400 K is estimated for the hot core using CH_(3)CN (J = 19–18) lines, with detections of 11 K-ladder components. The high temperature and the mass estimates for the outflows indicate high-mass star formation. The continuum polarization pattern shows an ordered distribution, and its orientation over the main outflow appears to be aligned with the outflow. The derived magnetic field indicates slightly super-critical conditions. While the magnetic and outflow energies are comparable, the B-field orientation appears to have changed from parsec scales to ~0.1 pc scales during the core/star formation process.

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Additional Information:© 2014 The American Astronomical Society. Received 2013 November 8; accepted 2014 January 27; published 2014 February 26. Comments from an anonymous refereewhich helped improve the Letter are gratefully acknowledged.
Subject Keywords:ISM: jets and outflows; ISM: magnetic fields; stars: formation; stars: massive
Issue or Number:2
Record Number:CaltechAUTHORS:20140428-102615647
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Official Citation:Hot Core, Outflows, and Magnetic Fields in W43-MM1 (G30.79 FIR 10) T. K. Sridharan et al. 2014 ApJ 783 L31
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:45243
Deposited By: Jason Perez
Deposited On:28 Apr 2014 21:32
Last Modified:10 Nov 2021 17:01

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