Free access article

Issue A&A Volume 400, Number 3, March IV 2003 Page(s) 1161 - 1162 Section Celestial mechanics and astrometry DOI 10.1051/0004-6361:20030100

A&A 400, 1161-1162 (2003)
DOI: 10.1051/0004-6361:20030100

The H -H infrared absorption bands at temperatures from 1000 K to 2500 K

M. Gustafsson and L. Frommhold

The University of Texas at Austin, Physics Department, 1 University Station C1600, Austin, TX 78712-0264, USA
    e-mail: frommhold@physics.utexas.edu
(Received 31 October 2002 / Accepted 14 January 2003)

Abstract
H ₂-H collision-induced absorption spectra are computed for temperatures from 1000 K to 2500 K and frequencies from 100 cm ^-1 to 10 000 cm ^-1. The calculations are quantum mechanical and the isotropic potential approximation has been applied. The computed absorption in the fundamental band agrees roughly with the one determined by Patch (1974). However, the absorption in the translational band, which has not been obtained before, is significantly stronger than in the fundamental band.

Key words: molecular processes -- infrared: stars -- line: profiles -- radiation mechanisms: thermal -- scattering -- stars: atmospheres

Offprint request: M. Gustafsson, magnus@physics.utexas.edu

© ESO 2003

What is OpenURL?