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A cometary origin for CO in the stratosphere of Saturn?

Hartogh, P.; Lellouch, E.; Encrenaz, T. +6 more

Context. The CO(3-2) line has been observed in the atmosphere of Saturn. The CO(3-2) observation proves that an external source of CO exists in the stratosphere of the planet.
Aims: We attempt to constrain the type and magnitude of the external source of CO in the atmosphere of Saturn, by observing the emission core of the CO(6-5) line.
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Stochastic orbital migration of small bodies in Saturn's rings

Papaloizou, J. C. B.; Rein, H.

Many small moonlets that create propeller structures have been found in Saturn's rings by the Cassini spacecraft. We study the dynamical evolution of such 20-50 m sized bodies, which are embedded in Saturn's rings. We estimate the importance of various interaction processes with the ring particles on the moonlet's eccentricity and semi-major axis …

Reflectance spectra of Titan tholin between 7000 and 10 cm^-1. Interpretation of Cassini/CIRS observation of Saturn's satellite Phoebe

Barucci, M. A.; Dotto, E.; Brucato, J. R. +3 more

Context. Laboratory experiments provide a great support to astronomical studies in that they are the most suited technique to reproduce, model and interpret the observational data.
Aims: We investigate the spectroscopic properties of particulate and flat slab of tholin samples in a wide MIR and FIR spectral range at cryogenic temperature to c…

Fine-scale density wave structure of Saturn's rings: A hydrodynamic theory

Gedalin, M.; Griv, E.

Aims: We examine the linear stability of the Saturnian ring disk of mutually gravitating and physically colliding particles with special emphasis on its fine-scale ~100 m density wave structure, that is, almost regularly spaced, aligned cylindric density enhancements and optically-thin zones with the width and the spacing between them of roug…

A precise modeling of Phoebe's rotation

Souchay, J.; Cottereau, L.; Aleshkina, E.

Aims: Although the rotation of some Saturn's satellites in spin-orbit has already been studied by several authors, this is not the case for the rotation of Phoebe, which stands out because it is non-resonant. The purpose of the paper is to determine for the first time and with precision its precession-nutation motion.
Methods: We adopt a…