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  • Lucchetti, A.OAPD Astron Observ Padova, INAF, Vic Osservatorio 5, I-35122 Padua, Italy (author)

Geomorphological and spectrophotometric analysis of Seth's circular niches on comet 67P/Churyumov-Gerasimenko using OSIRIS images

  • Article/chapterEnglish2017

Publisher, publication year, extent ...

  • 2017-06-23
  • OXFORD UNIV PRESS,2017
  • printrdacarrier

Numbers

  • LIBRIS-ID:oai:DiVA.org:uu-376698
  • https://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-376698URI
  • https://doi.org/10.1093/mnras/stx1590DOI

Supplementary language notes

  • Language:English
  • Summary in:English

Part of subdatabase

Classification

  • Subject category:ref swepub-contenttype
  • Subject category:art swepub-publicationtype

Notes

  • We provide a detailed geomorphological and spectrophotometric analysis of the circular niches located on the Seth region of 67P using OSIRIS images. The features can be related to landslide events that occurred on 67P and shaped its surface, as the recent Aswan cliff collapse detected in the same region. We therefore provide an analysis of the area pre -and post-perihelion suggesting that no specific changes have been observed. To assess this, after performing a geomorphological map of the area that allows us to identify different terrain units, we computed the boulders cumulative size frequency distribution (SFD) of the niches, before and after the perihelion passage. The niches SFDs are characterized by a similar trend with two different power-law indices within the same deposit: lower power-law value (between -2.3 and -2.7) for boulders smaller than 5 m and steeper power-law value (between -4.7 and -5.0) for boulders larger than 5 m. These trends suggest that smaller boulders have evolved and progressively have been depleted (lower power-law index), while bigger boulders are more representative of the event that generated the deposit and are less degraded. Then, we perform the spectrophotometric analysis of this region comparing pre-and post-perihelion results. We found colour changes within the area, in particular brighter patches related to the presence of exposed water ice mixed to the refractory materials have been detected in the post-perihelion images.

Subject headings and genre

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  • Pajola, M.NASA, Ames Res Ctr, Moffett Field, CA 94035 USA (author)
  • Fornasier, S.UMPC Univ Paris 06, Univ Paris Diderot, Sorbonne Paris Cite,Sorbonne Univ, LESIA,Observ Paris,PSL Res Univ,CNRS, 5 Pl J Janssen, F-92195 Meudon, France (author)
  • Mottola, S.Deutsch Zentrum Luft & Raumfahrt DLR, Inst Planetenforsch, Rutherfordstr 2, D-12489 Berlin, Germany (author)
  • Penasa, L.Univ Padua, CISAS G Colombo, Ctr Studies & Act Space, Via Venezia 15, I-35131 Padua, Italy (author)
  • Jorda, L.CNRS, UMR 7326, Lab Astrophys Marseille, 38 Rue Frederic Joliot Curie, F-13388 Marseille 13, France;Aix Marseille Univ, 38 Rue Frederic Joliot Curie, F-13388 Marseille 13, France (author)
  • Cremonese, G.OAPD Astron Observ Padova, INAF, Vic Osservatorio 5, I-35122 Padua, Italy (author)
  • Feller, C.UMPC Univ Paris 06, Univ Paris Diderot, Sorbonne Paris Cite,Sorbonne Univ, LESIA,Observ Paris,PSL Res Univ,CNRS, 5 Pl J Janssen, F-92195 Meudon, France (author)
  • Hasselmann, P. H.UMPC Univ Paris 06, Univ Paris Diderot, Sorbonne Paris Cite,Sorbonne Univ, LESIA,Observ Paris,PSL Res Univ,CNRS, 5 Pl J Janssen, F-92195 Meudon, France (author)
  • Massironi, M.Univ Padua, Dept Geosci, Via G Gradenigo 6, I-35131 Padua, Italy (author)
  • Ferrari, S.Univ Padua, CISAS G Colombo, Ctr Studies & Act Space, Via Venezia 15, I-35131 Padua, Italy (author)
  • Naletto, G.Univ Padua, CISAS G Colombo, Ctr Studies & Act Space, Via Venezia 15, I-35131 Padua, Italy;Univ Padua, Dept Informat Engn, Via Gradenigo 6-B, I-35131 Padua, Italy;CNR, IFN, UOS Padova, LUXOR, Via Trasea 7, I-35131 Padua, Italy (author)
  • Oklay, N.Deutsch Zentrum Luft & Raumfahrt DLR, Inst Planetenforsch, Rutherfordstr 2, D-12489 Berlin, Germany (author)
  • Sierks, H.Max Planck Inst Sonnensyst Forsch, Justus von Liebig Weg 3, D-37077 Gottingen, Germany (author)
  • Barbieri, C.NASA, Ames Res Ctr, Moffett Field, CA 94035 USA;Univ Padua, Dept Phys & Astron G Galilei, Vic Osservatorio 3, I-35122 Padua, Italy (author)
  • Lamy, P. L.CNRS, UMR 7326, Lab Astrophys Marseille, 38 Rue Frederic Joliot Curie, F-13388 Marseille 13, France;Aix Marseille Univ, 38 Rue Frederic Joliot Curie, F-13388 Marseille 13, France (author)
  • Rodrigo, R.INTA, CSIC, Ctr Astrobiol, E-28850 Madrid, Spain;Int Space Sci Inst, Hallerstr 6, CH-3012 Bern, Switzerland (author)
  • Koschny, D.ESA, European Space Res & Technol Ctr, Sci Support Off, Keplerlaan 1,Postbus 299, NL-2201 AZ Noordwijk, Netherlands (author)
  • Rickman, HansUppsala universitet,Observationell astrofysik,PAS Space Res Ctr, Bartycka 18A, PL-00716 Warsaw, Poland(Swepub:uu)hansrick (author)
  • Keller, H. U.TU Braunschweig, Inst Geophys & Extraterr Phys, D-38106 Braunschweig, Germany (author)
  • Agarwal, J.Max Planck Inst Sonnensyst Forsch, Justus von Liebig Weg 3, D-37077 Gottingen, Germany (author)
  • A'Hearn, M. F.Univ Maryland, Dept Astron, College Pk, MD 20742 USA (author)
  • Barucci, M. A.UMPC Univ Paris 06, Univ Paris Diderot, Sorbonne Paris Cite,Sorbonne Univ, LESIA,Observ Paris,PSL Res Univ,CNRS, 5 Pl J Janssen, F-92195 Meudon, France (author)
  • Bertaux, J. L.UVSQ, CNRS, IPSL, LATMOS, 11 Blvd Alembert, F-78280 Guyancourt, France (author)
  • Bertini, I.Univ Padua, Dept Phys & Astron G Galilei, Vic Osservatorio 3, I-35122 Padua, Italy (author)
  • Boudreault, S.Max Planck Inst Sonnensyst Forsch, Justus von Liebig Weg 3, D-37077 Gottingen, Germany (author)
  • Da Deppo, V.CNR, IFN, UOS Padova, LUXOR, Via Trasea 7, I-35131 Padua, Italy (author)
  • Davidsson, B.NASA, Jet Prop Lab, 4800 Oak Grove Dr, Pasadena, CA 91109 USA (author)
  • Debei, S.Univ Padua, Dept Mech Engn, Via Venezia 1, I-35131 Padua, Italy (author)
  • De Cecco, M.Univ Trento, UNITN, Via Mesiano 77, I-38100 Trento, Italy (author)
  • Deller, J.Max Planck Inst Sonnensyst Forsch, Justus von Liebig Weg 3, D-37077 Gottingen, Germany (author)
  • Fulle, M.Osserv Astron Trieste, INAF, Via Tiepolo 11, I-34143 Trieste, Italy (author)
  • Groussin, O.CNRS, UMR 7326, Lab Astrophys Marseille, 38 Rue Frederic Joliot Curie, F-13388 Marseille 13, France;Aix Marseille Univ, 38 Rue Frederic Joliot Curie, F-13388 Marseille 13, France (author)
  • Gutierrez, P. J.CSIC, Inst Astrofis Andalucia, Glorieta Astron, E-18008 Granada, Spain (author)
  • Guettler, C.Max Planck Inst Sonnensyst Forsch, Justus von Liebig Weg 3, D-37077 Gottingen, Germany (author)
  • Hoffman, M.Max Planck Inst Sonnensyst Forsch, Justus von Liebig Weg 3, D-37077 Gottingen, Germany (author)
  • Hviid, S. F.Deutsch Zentrum Luft & Raumfahrt DLR, Inst Planetenforsch, Rutherfordstr 2, D-12489 Berlin, Germany (author)
  • Ip, W. H.Natl Cent Univ, Inst Space Sci, Chungli 32054, Taiwan (author)
  • Knollenberg, J.Deutsch Zentrum Luft & Raumfahrt DLR, Inst Planetenforsch, Rutherfordstr 2, D-12489 Berlin, Germany (author)
  • Kramm, J. R.Max Planck Inst Sonnensyst Forsch, Justus von Liebig Weg 3, D-37077 Gottingen, Germany (author)
  • Kuehrt, E.Deutsch Zentrum Luft & Raumfahrt DLR, Inst Planetenforsch, Rutherfordstr 2, D-12489 Berlin, Germany (author)
  • Kuppers, M.ESA, European Space Astron Ctr, Operat Dept, POB 78, E-28691 Madrid, Spain (author)
  • Lara, L. M.CSIC, Inst Astrofis Andalucia, Glorieta Astron, E-18008 Granada, Spain (author)
  • Lazzarin, M.Univ Padua, Dept Phys & Astron G Galilei, Vic Osservatorio 3, I-35122 Padua, Italy (author)
  • La Forgia, F.Univ Padua, Dept Phys & Astron G Galilei, Vic Osservatorio 3, I-35122 Padua, Italy (author)
  • Lin, L. Z.CSIC, Inst Astrofis Andalucia, Glorieta Astron, E-18008 Granada, Spain (author)
  • Lopez Moreno, J. J.CSIC, Inst Astrofis Andalucia, Glorieta Astron, E-18008 Granada, Spain (author)
  • Marzari, F.Univ Padua, Dept Phys & Astron G Galilei, Vic Osservatorio 3, I-35122 Padua, Italy (author)
  • Preusker, F.Deutsch Zentrum Luft & Raumfahrt DLR, Inst Planetenforsch, Rutherfordstr 2, D-12489 Berlin, Germany (author)
  • Scholten, F.Deutsch Zentrum Luft & Raumfahrt DLR, Inst Planetenforsch, Rutherfordstr 2, D-12489 Berlin, Germany (author)
  • Shi, X.Max Planck Inst Sonnensyst Forsch, Justus von Liebig Weg 3, D-37077 Gottingen, Germany (author)
  • Thomas, N.Univ Bern, Inst Phys, Sidlerstr 5, CH-3012 Bern, Switzerland (author)
  • Tubiana, C.Max Planck Inst Sonnensyst Forsch, Justus von Liebig Weg 3, D-37077 Gottingen, Germany (author)
  • Vincent, J. B.Deutsch Zentrum Luft & Raumfahrt DLR, Inst Planetenforsch, Rutherfordstr 2, D-12489 Berlin, Germany (author)
  • OAPD Astron Observ Padova, INAF, Vic Osservatorio 5, I-35122 Padua, ItalyNASA, Ames Res Ctr, Moffett Field, CA 94035 USA (creator_code:org_t)

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  • In:Monthly notices of the Royal Astronomical Society: OXFORD UNIV PRESS469, s. S238-S2510035-87111365-2966

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