The organic-rich surface of comet 67P/Churyumov-Gerasimenko as seen by VIRTIS/Rosetta
- CAPACCIONI, FABRIZIO
- Coradini, A.
- FILACCHIONE, GIANRICO
- Erard, S.
- Arnold, G.
- Drossart, P.
- DE SANCTIS, MARIA CRISTINA
- Bockelee-Morvan, D.
- CAPRIA, MARIA TERESA
- TOSI, Federico
- Leyrat, C.
- Schmitt, B.
- Quirico, E.
- Cerroni, P.
- MENNELLA, Vito
- RAPONI, Andrea
- CIARNIELLO, Mauro
- McCord, T.
- Moroz, L.
- PALOMBA, Ernesto
- Ammannito, E.
- Barucci, M. A.
- BELLUCCI, Giancarlo
- Benkhoff, J.
- Bibring, J. P.
- Blanco, A.
- Blecka, M.
- Carlson, R.
- Carsenty, U.
- Colangeli, L.
- Combes, M.
- Combi, M.
- Crovisier, J.
- Encrenaz, T.
- Federico, C.
- Fink, U.
- Fonti, S.
- Ip, W. H.
- Irwin, P.
- Jaumann, R.
- Kuehrt, E.
- Langevin, Y.
- Magni, G.
- Mottola, S.
- Orofino, V.
- Palumbo, P.
- PICCIONI, GIUSEPPE
- Schade, U.
- Taylor, F.
- Tiphene, D.
- Tozzi, G. P.
- Beck, P.
- Biver, N.
- Bonal, L.
- Combe, J. -Ph.
- Despan, D.
- Flamini, E.
- Fornasier, S.
- FRIGERI, ALESSANDRO
- GRASSI, Davide
- Gudipati, M.
- Longobardo, A.
- Markus, K.
- Merlin, F.
- OROSEI, ROBERTO
- RINALDI, GIOVANNA
- Stephan, K.
- CARTACCI, MARCO
- Cicchetti, A.
- GIUPPI, Stefano
- Hello, Y.
- Henry, F.
- Jacquinod, S.
- NOSCHESE, RAFFAELLA
- Peter, G.
- POLITI, ROMOLO
- Reess, J. M.
- Semery, A.
DOIAbstract
The VIRTIS (Visible, Infrared and Thermal Imaging Spectrometer) instrument on board the Rosetta spacecraft has provided evidence of carbon-bearing compounds on the nucleus of the comet 67P/Churyumov-Gerasimenko. The very low reflectance of the nucleus (normal albedo of 0.060 ± 0.003 at 0.55 micrometers), the spectral slopes in visible and infrared ranges (5 to 25 and 1.5 to 5% kÅ-1), and the broad absorption feature in the 2.9-to-3.6-micrometer range present across the entire illuminated surface are compatible with opaque minerals associated with nonvolatile organic macromolecular materials: a complex mixture of various types of carbon-hydrogen and/or oxygen-hydrogen chemical groups, with little contribution of nitrogen-hydrogen groups. In ...
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