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Spectrophotometry of the Khonsu region on the comet 67P/Churyumov-Gerasimenko using OSIRIS instrument images

Deshapriya, J. D. P. (author)
Univ Paris Diderot, UPMC Univ Paris 06, CNRS, Observ Paris,LESIA, 5 Pl J Janssen, F-92195 Meudon, France.
Barucci, M. A. (author)
Univ Paris Diderot, UPMC Univ Paris 06, CNRS, Observ Paris,LESIA, 5 Pl J Janssen, F-92195 Meudon, France.
Fornasier, S. (author)
Univ Paris Diderot, UPMC Univ Paris 06, CNRS, Observ Paris,LESIA, 5 Pl J Janssen, F-92195 Meudon, France.
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Feller, C. (author)
Univ Paris Diderot, UPMC Univ Paris 06, CNRS, Observ Paris,LESIA, 5 Pl J Janssen, F-92195 Meudon, France.
Hasselmann, P. H. (author)
Univ Paris Diderot, UPMC Univ Paris 06, CNRS, Observ Paris,LESIA, 5 Pl J Janssen, F-92195 Meudon, France.
Sierks, H. (author)
Max Planck Inst Sonnensyst Forsch, Justus von Liebig Weg 3, D-37077 Gottingen, Germany.
El-Maarry, M. R. (author)
Univ Bern, Phys Inst, Sidlerstr 5, CH-3012 Bern, Switzerland.
Pajola, M. (author)
NASA, Ames Res Ctr, Moffett Field, CA 94035 USA.
Barbieri, C. (author)
Univ Padua, Dept Phys & Astron G Galilei, Vic Osservatorio 3, I-35122 Padua, Italy.
Lamy, P. L. (author)
CNRS, UMR 7326, Lab Astrophys Marseille, F-13388 Marseille 13, France.;Aix Marseille Univ, F-13388 Marseille 13, France.
Rodrigo, R. (author)
CSIC, INTA, Ctr Astrobiol, E-28850 Madrid, Spain.;Int Space Sci Inst, Hallerstr 6, CH-3012 Bern, Switzerland.
Koschny, D. (author)
European Space Agcy, Res & Sci Support Dept, NL-2201 Noordwijk, Netherlands.
Rickman, Hans (author)
Uppsala universitet,Teoretisk astrofysik,PAS Space Reserch Ctr, Poland
Agarwal, J. (author)
Max Planck Inst Sonnensyst Forsch, Justus von Liebig Weg 3, D-37077 Gottingen, Germany.
A'Hearn, M. F. (author)
Univ Maryland, Dept Astron, College Pk, MD 20742 USA.
Bertaux, J. -L (author)
Bertini, I. (author)
Univ Padua, Dept Phys & Astron G Galilei, Vic Osservatorio 3, I-35122 Padua, Italy.
Boudreault, S. (author)
Max Planck Inst Sonnensyst Forsch, Justus von Liebig Weg 3, D-37077 Gottingen, Germany.
Cremonese, G. (author)
INAF, Osservatorio Astron Padova, Vicolo Osservatorio 5, I-35122 Padua, Italy.
Da Deppo, V. (author)
CNR, IFN UOS Padova LUXOR, Via Trasea 7, I-35131 Padua, Italy.
Davidsson, B. J. R. (author)
JPL, 4800 Oak Grove Dr, Pasadena, CA 91109 USA.
Debei, S. (author)
Univ Padua, Dept Mech Engn, Via Venezia 1, I-35131 Padua, Italy.
Deller, J. (author)
Max Planck Inst Sonnensyst Forsch, Justus von Liebig Weg 3, D-37077 Gottingen, Germany.
De Cecco, M. (author)
Univ Trento, UNITN, Via Mesiano 77, I-38100 Trento, Italy.
Fulle, M. (author)
INAF, Osservatorio Astron Trieste, Via Tiepolo 11, I-34143 Trieste, Italy.
Gicquel, A. (author)
Max Planck Inst Sonnensyst Forsch, Justus von Liebig Weg 3, D-37077 Gottingen, Germany.
Groussin, O. (author)
CNRS, UMR 7326, Lab Astrophys Marseille, F-13388 Marseille 13, France.;Aix Marseille Univ, F-13388 Marseille 13, France.
Gutierrez, P. J. (author)
CSIC, Inst Astrofis Andalucia, E-18080 Granada, Spain.
Guettler, C. (author)
Max Planck Inst Sonnensyst Forsch, Justus von Liebig Weg 3, D-37077 Gottingen, Germany.
Hofmann, M. (author)
Max Planck Inst Sonnensyst Forsch, Justus von Liebig Weg 3, D-37077 Gottingen, Germany.
Hviid, S. F. (author)
DLR, Inst Planetary Res, Rutherfordstr 2, D-12489 Berlin, Germany.
Ip, W. (author)
Natl Cent Univ, Inst Space Sci, Chungli 32054, Taiwan.
Jorda, L. (author)
CNRS, UMR 7326, Lab Astrophys Marseille, F-13388 Marseille 13, France.;Aix Marseille Univ, F-13388 Marseille 13, France.
Keller, H. U. (author)
TU Braunschweig, Inst Geophys & Extraterr Phys, D-38106 Braunschweig, Germany.
Knollenberg, J. (author)
DLR, Inst Planetary Res, Rutherfordstr 2, D-12489 Berlin, Germany.
Kramm, R. (author)
Max Planck Inst Sonnensyst Forsch, Justus von Liebig Weg 3, D-37077 Gottingen, Germany.
Kuehrt, E. (author)
DLR, Inst Planetary Res, Rutherfordstr 2, D-12489 Berlin, Germany.
Kueppers, M. (author)
ESA, ESAC, POB 78, E-28691 Villanueva De La Canada, Spain.
Lara, L. (author)
CSIC, Inst Astrofis Andalucia, E-18080 Granada, Spain.
Lazzarin, M. (author)
Univ Padua, Dept Phys & Astron G Galilei, Vic Osservatorio 3, I-35122 Padua, Italy.
Lopez Moreno, J. J. (author)
CSIC, Inst Astrofis Andalucia, E-18080 Granada, Spain.
Marzari, F. (author)
Univ Padua, Dept Phys & Astron G Galilei, Vic Osservatorio 3, I-35122 Padua, Italy.
Mottola, S. (author)
DLR, Inst Planetary Res, Rutherfordstr 2, D-12489 Berlin, Germany.
Naletto, G. (author)
CNR, IFN UOS Padova LUXOR, Via Trasea 7, I-35131 Padua, Italy.;Univ Padua, Dept Informat Engn, Via Gradenigo 6, I-35131 Padua, Italy.;Univ Padua, Ctr Studies & Act Space CISAS G Colombo, Via Venezia 15, I-35131 Padua, Italy.
Oklay, N. (author)
Max Planck Inst Sonnensyst Forsch, Justus von Liebig Weg 3, D-37077 Gottingen, Germany.
Perna, D. (author)
Univ Paris Diderot, UPMC Univ Paris 06, CNRS, Observ Paris,LESIA, 5 Pl J Janssen, F-92195 Meudon, France.
Pommerol, A. (author)
Univ Bern, Phys Inst, Sidlerstr 5, CH-3012 Bern, Switzerland.
Thomas, N. (author)
Univ Bern, Phys Inst, Sidlerstr 5, CH-3012 Bern, Switzerland.
Tubiana, C. (author)
Max Planck Inst Sonnensyst Forsch, Justus von Liebig Weg 3, D-37077 Gottingen, Germany.
Vincent, J. -B (author)
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Univ Paris Diderot, UPMC Univ Paris 06, CNRS, Observ Paris,LESIA, 5 Pl J Janssen, F-92195 Meudon, France Max Planck Inst Sonnensyst Forsch, Justus von Liebig Weg 3, D-37077 Gottingen, Germany. (creator_code:org_t)
2016-10-04
2016
English.
In: Monthly notices of the Royal Astronomical Society. - : Oxford University Press (OUP). - 0035-8711 .- 1365-2966. ; 462, s. S274-S286
Related links:
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  • Journal article (peer-reviewed)
Abstract Subject headings
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  • Our work focuses on the spectrophotometric analysis of selected terrain and bright patches in the Khonsu region on the comet 67P/Churyumov-Gerasimenko. Despite the variety of geological features, their spectrophotometric properties appear to indicate a similar composition. It is noticeable that the smooth areas in Khonsu possess similar spectrophotometric behaviour to some other regions of the comet. We observed bright patches on Khonsu with an estimation of >40 per cent of normal albedo and suggest that they are associated with H2O ice. One of the studied bright patches has been observed to exist on the surface for more than 5 months without a major decay of its size, implying the existence of potential sub-surface icy layers. Its location may be correlated with a cometary outburst during the perihelion passage of the comet in 2015 August, and we interpret it to have triggered the surface modifications necessary to unearth the stratified icy layers beneath the surface. A boulder analysis on Khonsu leads to a power-law index of -3.1 + 0.2/-0.3 suggesting a boulder formation, shaped by varying geological processes for different morphological units.

Subject headings

NATURVETENSKAP  -- Fysik -- Astronomi, astrofysik och kosmologi (hsv//swe)
NATURAL SCIENCES  -- Physical Sciences -- Astronomy, Astrophysics and Cosmology (hsv//eng)

Keyword

techniques: photometric
comets: individual: 67P/Churyumov-Gerasimenko

Publication and Content Type

ref (subject category)
art (subject category)

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