Clumpy Molecular Structures Revolving the B[e] Supergiant MWC 137

CIDALE, L.; DURONEA, N.; SANTANDER-GARCÍA, M.; MARAVELIAS, G.; LIIMETS, T.; KRAUS, M.; GUNAWAN, D. S.; CAPPA, C. E.; ARIAS, M. L.; OKSALA, M. E.; BORGES FERNANDES, M.; NICKELER, D.; CURE, M.

Praga

Congreso; The B[e] Phenomenon: Forty Years of Studies; 2016

IAU

The peculiar emission-line star MWC137 with its extended optical nebulawas 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.