Author/Authors :
Barnes، نويسنده , , Jason W. and Brown، نويسنده , , Robert H. and Soderblom، نويسنده , , Laurence and Buratti، نويسنده , , Bonnie J. and Sotin، نويسنده , , Christophe and Rodriguez، نويسنده , , Sebastien and Le Mouèlic، نويسنده , , Stephane and Baines، نويسنده , , Kevin H. and Clark، نويسنده , , Roger and Nicholson، نويسنده , , Phil، نويسنده ,
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 Titanʹs surface, and partition the surface into 9 spectral units that we describe in terms of spectral and spatial characteristics.
