Collision-induced absorption coefficients of H₂ pairs at temperatures from 60 K to 1000 K

Niels Bohr Institute for Astrophysics, Physics and Geophysics, University Observatory, Juliane Maries vej 30, 2100 Copenhagen, Denmark

Corresponding author: aborysow@nbi.dk

Received: 28 January 2002
Accepted: 8 April 2002

Abstract

New collision-induced absorption data of H₂ pairs at temperatures between 400 K and 1000 K are presented here for the first time. They are based on a careful interpolation and extension of the existing `low' temperature data, which were suited for use in planetary atmospheric modelling. The new data are aimed to help in modelling the coolest halo white dwarfs, the coolest M dwarfs, the L- and T- type dwarf stars, as well as brown dwarfs and “hot jupiters”. In addition, for the convenience of the future users, the already existing low temperature (60 K to 400 K) data are provided, in a consistent and user friendly tabular form. The data above 1000 K, which already existed, form a continuous sequence with the new data presented here. The total data set from 60 K to 7000 K and frequencies from 0 cm^-1 to ≤17 000 cm^-1 (computed for every 10 cm^-1) is now located at www.astro.ku.dk/~aborysow/programs.