HR: 14:40h
AN: P53C-05    [Abstracts]
TI: New Horizons Alice UV Observations of a Stellar Occultation by Jupiter's Atmosphere
AU: * Greathouse, T K
EM: tgreathouse@swri.edu
AF: Southwest Research Institute, 6220 Culebra Road, San Antonio, TX 78209, United States
AU: Vervack, R J
EM: Ron.Vervack@jhuapl.edu
AF: The Johns Hopkins University Applied Physics Laboratory, 11100 Johns Hopkins Road, Laurel, MD 20723, United States
AU: Gladstone, G R
EM: rgladstone@swri.edu
AF: Southwest Research Institute, 6220 Culebra Road, San Antonio, TX 78209, United States
AU: Stern, S A
EM: alan.stern@nasa.gov
AF: NASA Headquarters, 300 E Street, SW, Washington, DC 20546, United States
AU: Slater, D C
EM: dslater@swri.edu
AF: Southwest Research Institute, 6220 Culebra Road, San Antonio, TX 78209, United States
AU: Versteeg, M
EM: mversteeg@swri.edu
AF: Southwest Research Institute, 6220 Culebra Road, San Antonio, TX 78209, United States
AU: Davis, M W
EM: mdavis@swri.edu
AF: Southwest Research Institute, 6220 Culebra Road, San Antonio, TX 78209, United States
AU: Retherford, K D
EM: kretherford@swri.edu
AF: Southwest Research Institute, 6220 Culebra Road, San Antonio, TX 78209, United States
AU: Young, L A
EM: layoung@boulder.swri.edu
AF: Southwest Research Institute, 1050 Walnut Street, Suite 300, Boulder, CO 80302, United States
AU: Steffl, A J
EM: steffl@boulder.swri.edu
AF: Southwest Research Institute, 1050 Walnut Street, Suite 300, Boulder, CO 80302, United States
AU: Throop, H
EM: throop@boulder.swri.edu
AF: Southwest Research Institute, 1050 Walnut Street, Suite 300, Boulder, CO 80302, United States
AU: Parker, J W
EM: joel@boulder.swri.edu
AF: Southwest Research Institute, 1050 Walnut Street, Suite 300, Boulder, CO 80302, United States
AB: The Alice instrument onboard the New Horizons spacecraft observed two occultations of Chi Ophiuchus by Jupiter's atmosphere during the 2007 Jupiter flyby. The ingress occultation probed the atmosphere at 35 degrees latitude (planetographic) near the dawn terminator, while the egress probed 20 degrees latitude near the dusk terminator. We present a preliminary analysis of both the ingress and egress occultations, including determinations of the methane and acetylene homopause levels. These observations provide stringent constraints for the assumed strength of eddy mixing in current photochemical models of Jupiter's atmosphere.
DE: 5704 Atmospheres (0343, 1060)
DE: 5709 Composition (1060)
SC: Planetary Sciences [P]
MN: 2007 Fall Meeting