Chemistry and dynamics of the prestellar core L1544

  title={Chemistry and dynamics of the prestellar core L1544},
  author={Olli Sipila and P. Caselli and Edoardo Maria Alberto Redaelli and Silvia Spezzano},
  journal={Astronomy \& Astrophysics},
We aim to quantify the e ff ect of chemistry on the infall velocity in the prestellar core L1544. Previous observational studies have found evidence for double-peaked line profiles for the rotational transitions of several molecules, which cannot be accounted for with the models presently available for the physical structure of the source, without ad hoc up-scaling of the infall velocity. We ran one-dimensional hydrodynamical simulations of the collapse of a core with L1544-like properties (in…