Global-scale surface spectral variations on Titan seen from Cassini/VIMS

Jason W. Barnes, Robert H. Brown, Laurence Soderblom, Bonnie J. Buratti, Christophe Sotin, Sebastien Rodriguez, Stephane Le Mouèlic, Kevin H. Baines, Roger Clark, Phil Nicholson

Research output: Contribution to journalArticle

89 Scopus citations

Abstract

We present global-scale maps of Titan from the Visual and Infrared Mapping Spectrometer (VIMS) instrument on Cassini. We map at 64 near-infrared wavelengths simultaneously, covering the atmospheric windows at 0.94, 1.08, 1.28, 1.6, 2.0, 2.8, and 5 μm with a typical resolution of 50 km/pixel or a typical total integration time of 1 s. Our maps have five to ten times the resolution of ground-based maps, better spectral resolution across most windows, coverage in multiple atmospheric windows, and represent the first spatially resolved maps of Titan at 5 μm. The VIMS maps provide context and surface spectral information in support of other Cassini instruments. We note a strong latitudinal dependence in the spectral character of Titan's surface, and partition the surface into 9 spectral units that we describe in terms of spectral and spatial characteristics.

Original languageEnglish (US)
Pages (from-to)242-258
Number of pages17
JournalIcarus
Volume186
Issue number1
DOIs
StatePublished - Jan 1 2007

Keywords

  • Titan

ASJC Scopus subject areas

  • Astronomy and Astrophysics
  • Space and Planetary Science

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    Barnes, J. W., Brown, R. H., Soderblom, L., Buratti, B. J., Sotin, C., Rodriguez, S., Le Mouèlic, S., Baines, K. H., Clark, R., & Nicholson, P. (2007). Global-scale surface spectral variations on Titan seen from Cassini/VIMS. Icarus, 186(1), 242-258. https://doi.org/10.1016/j.icarus.2006.08.021