The significance of pressure shifts for the interpretation of H2 quadrupole lines in planetary spectra

摘要: Abstract The effects of pressure shifts on the formation H 2 quadrupole absorption lines in atmospheres major planets have not previously been considered. It is shown that, although measured for 3-0 and 4-0 bands, they can be estimated from existing experimental theoretical knowledge. Using these estimates, it that effect negligible Jupiter small Saturn, but quite large Uranus. Consideration reduces abundances determined Uranus by 25% to 50% as compared calculations which are ignored. may even larger Neptune.