Voyager 2 photopolarimeter experiment: Evidence for tenuous outer ring material at Saturn |
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| Institution: | 1. Università degli studi di Napoli Federico II, via Claudio 21, I-80124 Napoli, Italy;2. Consorzio CREATE c/o Università degli studi di Napoli Federico II, via Claudio 21, I-80124 Napoli, Italy;3. Università degli Studi di Padova, Padova, Italy;1. Dipartimento di Ingegneria Meccanica e Aerospaziale, Politecnico di Torino, Corso Duca degli Abruzzi 24, 10129 Torino, Italy;2. Kavli Institute for Astrophysics and Space Research, Massachusetts Institute of Technology, Cambridge, MA 02139, USA;3. Department of Astronomy, Boston University, 725 Commonwealth Ave, Boston, MA 02215, USA |
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| Abstract: | A statistical analysis of the stellar occultation data from the Voyager 2 photopolarimeter indicates significant amounts of tenuous material in two regions exterior to Saturn's F ring. The first region has a radial width of approximately 200 km starting at a Saturn-centered radial distance of 141,650 km (1500 km outside of the F ring) and its normal optical depth is 0.012 ± 0.004. The second is a very broad region of enhanced opacity, at least 1000 km in radial width, beginning at approximately 144,090 km, with a normal optical depth of approximately 0.009 ± 0.004 (more than 100 times greater than the Saturn E ring). |
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