Directly Observing the Orbital Evolution of Disk-embedded Masses

Details Directly Observing the Orbital Evolution of Disk-embedded Masses Directly Observing the Orbital Evolution of Disk-embedded Masses

May 2010

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010dda....41.1101t&link_type=abstract

American Astronomical Society, DDA meeting #41, #11.01; Bulletin of the American Astronomical Society, Vol. 41, p.939

Astronomy and Astrophysics

Astronomy

1

Scientific paper

"Propeller"-shaped structures, which surround unseen embedded moonlets in Saturn's A Ring, have been individually tracked over the 5-year duration of the Cassini mission. In several cases, we confirm the persistence of individual disk-embedded moons over that span of time. Thus, for the first time, we are studying the long-term orbits of objects embedded in a disk, rather than orbiting in empty space. In at least one case, we see evidence of orbital evolution. Among the possible explanations for this orbital evolution, we find the most likely to involve gravitational and/or collisional interactions between the moon and the disk.

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