NOAO >   Observing Info >   Approved Programs >   2010B-0566

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Proposal Information for 2010B-0566


PI: Laurence Trafton, University of Texas at Austin, lmt@astro.as.utexas.edu
Address: The University of Texas, Department of Astronomy, 1 University Station, C1400, Austin, TX 78712-0259, US

CoI: Sang Kim, Kyunghee University, Korea
CoI: Thomas Geballe, Gemini Observatory - North

Title: Search for Enhancement of Unidentified Titan Absorption Features over Xanadu and for Titan CH4 Humidity Gradients

Abstract: We propose to use Gemini with NIFS/Altair to map weak methane lines and unidentified weak features that we have discovered in Titan's 2-2.11 micron window in the K band in order to search for enhanced absorption over Xanadu reported by Adamkovics et al. (2009) for condensed CH4 and to probe the hemispherical (seasonal) variation of the methane mixing ratio in Titan's lower, unsaturated atmosphere. These will help to constrain the identification and role of the unknown species, e.g. whether it is associated with drizzle, and will help test the proposition that volatile lakes are the dominant source reservoir that maintains methane in Titan's atmosphere.


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NOAO >   Observing Info >   Approved Programs >   2010B-0566

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