Methanol abundance in low mass protostars

Abstract

Methanol lines observations of a sample of low mass Class 0 protostars are presented. Using a 1D radiative transfer model, I show that several protostars have large abundance jumps in the inner hot and dense region of envelopes, probably because of thermal grain mantle evaporation. These abundances are compared with a grain surface chemistry model.

2 pages, 2 figures, Proceeding of the conference "The dusty and molecular universe", 27-29 October 2004, Paris, France