The Enceladus and OH Tori at Saturn

Details The Enceladus and OH Tori at Saturn The Enceladus and OH Tori at Saturn

Jun 2006

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006apj...644l.137j&link_type=abstract

The Astrophysical Journal, Volume 644, Issue 2, pp. L137-L139.

Astronomy and Astrophysics

Astronomy

57

Planets And Satellites: Individual (Enceladus), Planets And Satellites: Individual: Saturn

Scientific paper

The remarkable observation that Enceladus, a small icy satellite of Saturn, is actively venting has led to the suggestion that ejected water molecules are the source of the toroidal atmosphere observed at Saturn for over a decade using the Hubble Space Telescope (HST). Here we show that the venting leads directly to a new feature, a narrow Enceladus neutral torus. The larger torus, observed using HST, is populated by charge exchange, the process that limits the lifetime of the neutrals in the Enceladus torus.

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