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arxiv: 1610.05596 · v1 · pith:K367K4OKnew · submitted 2016-10-17 · 🌌 astro-ph.SR

Clumpy molecular structures revolving the B[e] supergiant MWC 137

M. Kraus , L.S. Cidale , T. Liimets , C.E. Cappa , N. Duronea , D.S. Gunawan , M.E. Oksala , M. Santander-Garcia
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M.L. Arias D.H. Nickeler G. Maravelias M. Borges Fernandes M. Cure
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classification 🌌 astro-ph.SR
keywords clumpymolecularnebulaopticalstarstructuressupergiantapex
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The peculiar emission-line star MWC 137 with its extended optical nebula was recently classified as B[e] supergiant. To study the spatial distribution of its circumstellar molecular gas on small and large scales, we obtained near-infrared and radio observations using SINFONI and APEX, respectively. We find that the hot CO gas is arranged in moving clumpy ring and shell structures close to the star, while a cold CO envelope is encircling the borders of the optical nebula from the south to the west.

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