**Cooling by H**_{2}**.**

Le Bourlot, Pineau des Forêts and Flower (1999, MNRAS, 305, 802)
have computed the rate of cooling of astrophysical media through the collisional
excitation of H_{2} by H, He and H_{2}. Available at this website are the
rate coefficients (cm^{3} s^{-1}) that were at the basis of these
calculations, together with the parameters of the fits of the rate coefficients to
analytic functions of the kinetic temperature. Also given are the cooling rates per H_{2}
molecule (erg s^{-1}), and a Fortran program which interpolates to any desired set
of values of the gas density and temperature, ortho- to para-H_{2} ratio, and H to
H_{2} density ratio. A brief description of these data sets is given below. For
more complete information, please consult the full paper (Le Bourlot et al. 1999 )
Queries or comments may be addressed to the authors: