Volume 423, Number 1, August III 2004
|Page(s)||391 - 395|
|Section||Planets and planetary systems|
|Published online||29 July 2004|
Modelling the Lyman dayglow in the Jovian atmosphere*
Laboratoire de Planétologie de Grenoble, CNRS-UJF, BP 53, 38041 Saint Martin d'Hères, Cedex 9, France e-mail: firstname.lastname@example.org
2 MS 150-21, Caltech, Pasadena, California 91125, USA
3 MS 183-501, JPL, Pasadena, California 9110, USA e-mail: email@example.com
4 Observatoire de Paris-Meudon, 5 place Jules Jansen, 92195 Meudon, France e-mail: firstname.lastname@example.org
Accepted: 15 March 2004
The Lyman dayglow of Jupiter provides an important source of information about its atmosphere. The H Lyman and the H2 6–0 P(1) line of the Lyman system overlap, resulting in a coupling effect between these two lines. In this paper, we evaluate the effect of this overlapping via radiative transfer modelling and show its effect both on the integrated intensity and the line profile. The intensity increases at about 1025 Å at the centre of the disc, tends to slightly decrease at the limb, and creates an asymmetry in the profile. This asymmetry is also present in the jovian H-Lyman α bulge region.
Key words: radiative transfer / planets and satellites: individual: Jupiter / ultraviolet: solar system
© ESO, 2004
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