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Paper: Clumpy Molecular Structures Revolving the B[e] Supergiant MWC 137
Volume: 508, The B[e] Phenomenom: Forty Years of Studies
Page: 381
Authors: Kraus, M.; Cidale, L. S.; Liimets, T.; Cappa, C. E.; Duronea, N.; Gunawan, D.S.; Oksala, M. E.; Santander-García, M.; Arias, M. L.; Nickeler, D. H.; Maravelias, G.; Borges Fernandes, M.; Curé, M.
Abstract: The peculiar emission-line star MWC 137 with its extended optical nebula was recently classified as a 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 a moving clumpy ring and shell structures close to the star, while a cold CO envelope is encircling the borders of the optical nebula from South to West.
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