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The massive hot core associated with G31.41+0.31 |
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| Authors: | C. M. Walmsley R. Cesaroni L. Olmi E. Churchwell P. Hofner |
| Affiliation: | (1) Max Planck Institut für Radioastronomie Bonn, Auf dem Hügel 69, D-53121 Bonn, Germany;(2) Osservatorio Astrofisico di Arcetri, Largo E. Fermi 5, I-50125 Firenze, Italy;(3) Arecibo Observatory, PO Box 995, 00613 Arecibo, Puerto Rico, USA;(4) Washburn Observatory, University of Wisconsin-Madison, 475 N. Charter St., 53706 Madison, WI, USA |
| Abstract: | We have used the IRAM Plateau de Bure Interferometer to observe the ground state and vibrationally excited lines of Methyl Cyanide towards the UCHII region G31.41+0.31. We also obtained a map of the continuum emission at a frequency of 110 GHz. We detect a hot molecular core in the emission both of methyl cyanide and of the 110 GHz continuum. We estimate a temperature of 200 K and a mass of 1000 M for this compact massive region. We also detect a velocity gradient or shift across the methyl cyanide core whose origin could be due to rotation. |
| Keywords: | Molecular Lines Hot Core Massive Star Formation |
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