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

M. Kraus ... [et al.].

Serie: Trabajos publicados del IAR ; no. 1397

Proceedings of a Conference held at Charles University, Prague, Czech Republic 27 June - 1 July 2016. Edited by Anatoly Miroshnichenko, Sergey Zharikov, Daniela Korčáková and Marek Wolf.

Resumen: 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