Photoevaporation of a binary proplyd system

Abstract

We present 3D numerical simulations of photo-evaporation of a binary accretion disk system inside an H II region. The simulations take into account farand extreme-ultraviolet (FUV and EUV) radiation from a stellar source. We study both FUV dominated and EUV dominated models. FUV dominated models show a well defined interproplyd shell in both Hα emission and density maps, when the separation of the binary system is relatively large (~ 2 000 AU). For smaller separations (~ 200 AU), the interproplyd shell no longer develops. We show that an EUV model with a suitable choice of parameters increases the H emission of the interproplyd shell relative to the emission of the ionization fronts, in better agreement with the observations of the binary proplyd LV1.