Longitudinal and temporal variability of Pluto

Details Longitudinal and temporal variability of Pluto Longitudinal and temporal variability of Pluto

Oct 2011

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011epsc.conf..512p&link_type=abstract

EPSC-DPS Joint Meeting 2011, held 2-7 October 2011 in Nantes, France. http://meetings.copernicus.org/epsc-dps2011, p.512

Computer Science

Scientific paper

In particular, we present low dispersion L band spectroscopy together with high dispersion spectroscopy in H and K bands of Pluto acquired with the NACO instrument at the ESO VLT on 27 June 2008. The nature and properties of the compounds present on the surface of Pluto are investigated by applying a Hapke radiative transfer model to the measured spectra. The 2008 observations are compared with 2005 measurements obtained with the same instrument and spectroscopic mode, covering similar sub-earth longitudes. A systematic study of Pluto's surface composition is presented in order to characterize the spatial and temporal distribution of Pluto's surface ices. The spectra of Pluto obtained at different sub-earth longitudes do not show any significant difference in the wavelength range between 2.9 and 3.7μm. No changes in the ratio between pure and diluted methane ice are observed from 2005 to 2008, indicating that Pluto's resurfacing process has slowed down or stopped.

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