Rotational Excitation of HC_3N by H_2 and He at low temperatures
  Rates for rotational excitation of HC3N by collisions with He atoms and H2 molecules are computed for kinetic temperatures in the range 5-20K and 5-100K, respectively. These rates are obtained from extensive quantum and quasi-classical calculations using new accurate potential energy surfaces (PES). 
Michael Wernli (LAOG), Laurent Wiesenfeld (LAOG), Alexandre Faure   (LAOG), Pierre Valiron (LAOG)