**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: