The interstellar medium around WR stars: HD 211564 and HD211853

C. CAPPA, J. VASQUEZ, E.M. ARNAL, S. CICHOWOLSKI, S. PINEAULT

Lunteren, Holanda

Workshop; Mass loss from stars and the evolution of stellar clusters; 2006

Utrecht University

We analyze the distribution of interstellar matter in the environs of the WR stars WR\,152 and WR\,153ab, associated with two different ring nebulae in the H{\sc ii} region Sh2-132. We have detected the radio continuum and infrared counterparts of the inner and outer ionized shells related to WR\,152. An H{\sc i}interstellar bubble was also identified surrounding the outer shell. As for WR\,153ab, dust and molecular gas was found to be associated with its ring nebula. The emission in MSX band A suggests the presence of a photodissociation region at the interface between the ionized and molecular material.