Gas molecular en la nebulosa anillo alrededor de WR 16

DURONEA, N. U.; ARNAL, E. M.

BAAA

Asociación Argentina de Astronomía

Lugar: La Plata; Año: 2009 vol. 52 p. 139 - 142

0571-3285

Using NANTEN 12 CO (J=1 0) observations, the distribution of the molec- ular gas towards the multiple ring nebula sorrounding the star WR 16 has been analysed. Two striking features associated with the star and the neb- ula, respectively, were identified. One of them, the external one, is inter- stellar molecular gas which has been wind shaped in an early stage of the star. The internal feature is only noticed in a very small velocity range and has probably a stellar origin. Physical parameters have been calculated and kinematical models have been constructed in order to explain the physical link between these features and the nebula.