HR: 1340h
AN: P43A-1002    [Abstracts]
TI: Modelling the Neutral Cloud Environment of the Saturnian System
AU: * Tseng, W
EM: d939006@astro.ncu.edu.tw
AF: Intitute of Astronomy, National Central University, No. 300, Jhongda Rd, Jhongli, 320, Taiwan
AU: Wang, Y
EM: m949001@astro.ncu.edu.tw
AF: Intitute of Astronomy, National Central University, No. 300, Jhongda Rd, Jhongli, 320, Taiwan
AU: Ip, W
EM: wingip@astro.ncu.edu.tw
AF: Intitute of Astronomy, National Central University, No. 300, Jhongda Rd, Jhongli, 320, Taiwan
AU: Ip, W
EM: wingip@astro.ncu.edu.tw
AF: Intitute of Space Science, National Central University, No. 300, Jhongda Rd, Jhongli, 320, Taiwan
AB: From HST observations and the Cassini measurements, we know that the Saturnian system is immersed in a vast neutral gas cloud of water molecules and their dissociative products like OH, O and H. Most of the gas molecules originate from the water gas jets in the south pole of Enceladus. In addition, the ring system is the source of oxygen molecules and atoms which can be injected into the distant Saturnian magnetosphere via ion- molecule reactions. Titan's exosphere is another major source of neutral gas composed of escaping N2, CH4 and H2. Because of different diffusion and transport processes, the global distribution of the neutral gas is a combination of these separate source regions. In this work, we will examine the structures of these separate gas clouds using the most recent plasma model from Cassini and check how these different pieces can be fit together.
DE: 2732 Magnetosphere interactions with satellites and rings
DE: 2756 Planetary magnetospheres (5443, 5737, 6033)
DE: 6265 Planetary rings
DE: 6280 Saturnian satellites
DE: 6281 Titan
SC: Planetary Sciences [P]
MN: 2007 Fall Meeting