The model proposed by Hong (1985) describing the surface brightness variation with elongation of the Zodiacal Light has been applied to predict the spectral line profiles produced by Doppler effects associated with scattering from interplanetary dust for the simple case of prograde Keplerian orbits. Over the greater elongation range, the predictions are substantially the same as for previous models but with shallower line depths and more pronounced asymmetries. At elongations ∼ 30° and less, however, Hong's mixture of phase angle scattering functions predicts bifurcation of the lines so providing an alternative explanation to the two dust stream model of Beavers et al. (1980) proposed as the interpretation of their spectra of the F corona. The work also highlights a general problem of using radial velocity correlation masks for investigations of Zodiacal Light spectra.
|Number of pages||6|
|Journal||Astronomy and Astrophysics|
|Publication status||Published - 1 Apr 1996|
- Interplanetary medium: scattering
ASJC Scopus subject areas
- Astronomy and Astrophysics
- Space and Planetary Science