1 September 2015 VIRTIS on Rosetta: a unique technique to observe comet 67P/Churyumov-Gerasimenko – first results and prospects
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Abstract
VIRTIS aboard ESA’s Rosetta mission is a complex imaging spectrometer that combines three unique data channels in one compact instrument to study nucleus and coma of comet 67P/Churyumov-Gerasimenko. Two of the spectral channels are dedicated to spectral mapping (-M) at moderate spectral resolution in the range from 0.25 to 5.1 μm. The third channel is devoted to high resolution spectroscopy (-H) between 2 and 5 μm. The VIRTIS-H field of view is approximately centered in the middle of the -M image. The spectral sampling of VIRTIS-M is 1.8 nm/band below 1 μm and 9.7 nm/band between 1-5 μm, while for VIRTIS-H λ/Δλ= 1300-3000 in the 2-5 μm range. This paper describes selected findings during the pre-landing phase of Philae’s robotic subsystem and the comet’s escort phase as well as prospects of further observations. The preliminary results include studies of surface composition, coma analyses, and temperature retrieval for the nucleus surface-coma system demonstrating the capability of the instrument.
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Gabriele E. Arnold, Gabriele E. Arnold, Fabrizio Capaccioni, Fabrizio Capaccioni, Gianrico Filacchione, Gianrico Filacchione, Stéphane Erard, Stéphane Erard, Dominique Bockelee-Morvan, Dominique Bockelee-Morvan, Maria Antonietta Barucci, Maria Antonietta Barucci, Maria Cristina De Sanctis, Maria Cristina De Sanctis, Ernesto Palomba, Ernesto Palomba, Maria Teresa Capria, Maria Teresa Capria, Priscilla Cerroni, Priscilla Cerroni, Pierre Drossart, Pierre Drossart, Cedric Leyrat, Cedric Leyrat, Giuseppe Piccioni, Giuseppe Piccioni, Bernard Schmitt, Bernard Schmitt, Frederico Tosi, Frederico Tosi, Gian Paolo Tozzi, Gian Paolo Tozzi, David Kappel, David Kappel, Kathrin Markus, Kathrin Markus, Alessandra Migliorini, Alessandra Migliorini, } "VIRTIS on Rosetta: a unique technique to observe comet 67P/Churyumov-Gerasimenko – first results and prospects", Proc. SPIE 9608, Infrared Remote Sensing and Instrumentation XXIII, 960803 (1 September 2015); doi: 10.1117/12.2187208; https://doi.org/10.1117/12.2187208
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