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LIBRIS Formathandbok  (Information om MARC21)
FältnamnIndikatorerMetadata
00010335naa a2200985 4500
001oai:DiVA.org:uu-308790
003SwePub
008161130s2016 | |||||||||||000 ||eng|
0247 a https://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-3087902 URI
0247 a https://doi.org/10.1051/0004-6361/2016288872 DOI
040 a (SwePub)uu
041 a engb eng
042 9 SwePub
072 7a ref2 swepub-contenttype
072 7a art2 swepub-publicationtype
1001 a Pajola, Mauriziou NASA, Ames Res Ctr, Moffett Field, CA 94035 USA.;Univ Padua, CISAS, Ctr Studies & Act Space, Via Venezia 15, I-35131 Padua, Italy.4 aut
2451 0a The southern hemisphere of 67P/Churyumov-Gerasimenko :b Analysis of the preperihelion size-frequency distribution of boulders >= 7m
264 c 2016-07-14
264 1b EDP Sciences,c 2016
338 a print2 rdacarrier
520 a Aims. We calculate the size-frequency distribution of the boulders on the southern hemisphere of comet 67P Churyumov-Gerasimenko (67P), which was in shadow before the end of April 2015. We compare the new results with those derived from the northern hemisphere and equatorial regions of 67P, highlighting the possible physical processes that lead to these boulder size distributions. Methods. We used images acquired by the OSIRIS Narrow Angle Camera (NAC) on 2 May 2015 at a distance of 125 km from the nucleus. The scale of this dataset is 2.3 m/px; the high resolution of the images, coupled with the favorable observation phase angle of 62 degrees, provided the possibility to unambiguously identify boulders >= 7 m on the surface of 67P and to manually extract them with the software ArcGIS. We derived the size-frequency distribution of the illuminated southern hemisphere. Results. We found a power-law index of -3.6 +/- 0.2 for the boulders on the southern hemisphere with a diameter range of 7-35 m. The power-law index is equal to the one previously found on northern and equatorial regions of 67P, suggesting that similar boulder formation processes occur in both hemispheres. The power-law index is related to gravitational events triggered by sublimation and/or thermal fracturing causing regressive erosion. In addition, the presence of a larger number of boulders per km(2) in the southern hemisphere, which is a factor of 3 higher with respect to the northern hemisphere, suggests that the southernmost terrains of 67P are affected by a stronger thermal fracturing and sublimating activity, hence possibly causing larger regressive erosion and gravitational events.
650 7a NATURVETENSKAPx Fysikx Astronomi, astrofysik och kosmologi0 (SwePub)103052 hsv//swe
650 7a NATURAL SCIENCESx Physical Sciencesx Astronomy, Astrophysics and Cosmology0 (SwePub)103052 hsv//eng
653 a comets: general
653 a comets: individual: 67P/Churyumov-Gerasimenko
653 a methods: data analysis
7001 a Lucchetti, Aliceu INAF, Osservatorio Astron Padova, Vic Osservatorio 5, I-35122 Padua, Italy.4 aut
7001 a Vincent, Jean-Baptisteu Max Planck Inst Sonnensyst Forsch, Justus von Liebig Weg 3, D-37077 Gottingen, Germany.4 aut
7001 a Oklay, Nildau Max Planck Inst Sonnensyst Forsch, Justus von Liebig Weg 3, D-37077 Gottingen, Germany.4 aut
7001 a El-Maarry, Mohamed R.u Univ Bern, Inst Phys, Sidlerstr 5, CH-3012 Bern, Switzerland.4 aut
7001 a Bertini, Ivanou Univ Padua, CISAS, Ctr Studies & Act Space, Via Venezia 15, I-35131 Padua, Italy.4 aut
7001 a Naletto, Giampierou Univ Padua, CISAS, 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.4 aut
7001 a Lazzarin, Monicau Univ Padua, Dept Phys & Astron G Galilei, Vic Osservatorio 3, I-35122 Padua, Italy.4 aut
7001 a Massironi, Matteou Univ Padua, Dept Geosci, Via G Gradenigo 6, I-35131 Padua, Italy.4 aut
7001 a Sierks, Holgeru Max Planck Inst Sonnensyst Forsch, Justus von Liebig Weg 3, D-37077 Gottingen, Germany.4 aut
7001 a Barbieri, Cesareu Univ Padua, CISAS, Ctr Studies & Act Space, Via Venezia 15, I-35131 Padua, Italy.;Univ Padua, Dept Phys & Astron G Galilei, Vic Osservatorio 3, I-35122 Padua, Italy.4 aut
7001 a Lamy, Philippeu Aix Marseille Univ, CNRS, LAM, UMR 7326, F-13388 Marseille, France.4 aut
7001 a Rodrigo, Rafaelu CSIC INTA, Ctr Astrobiol, Madrid 28850, Spain.;Int Space Sci Inst, Hallerstr 6, CH-3012 Bern, Switzerland.4 aut
7001 a Koschny, Detlefu European Space Res & Technol Ctr ESA, Sci Support Off, Keplerlaan 1,Postbus 299, NL-2201 AZ Noordwijk ZH, Netherlands.4 aut
7001 a Rickman, Hansu Uppsala universitet,Teoretisk astrofysik,PAS Space Reserch Ctr, Bartycka 18A, PL-00716 Warsaw, Poland.4 aut0 (Swepub:uu)hansrick
7001 a Keller, Horst U.u TU Braunschweig, Inst Geophys & Extraterrestrial Phys, D-38106 Braunschweig, Germany.4 aut
7001 a Agarwal, Jessicau Max Planck Inst Sonnensyst Forsch, Justus von Liebig Weg 3, D-37077 Gottingen, Germany.4 aut
7001 a A'Hearn, Michael F.u Univ Maryland, Dept Astron, College Pk, MD 20742 USA.4 aut
7001 a Barucci, Maria A.u Univ Paris Diderot, Univ Paris 06, CNRS, LESIA Observ Paris, 5 Pl J Janssen, F-92195 Meudon, France.;Univ Paris Diderot, Sorbonne Paris Cite, 4 Rue Elsa Morante, F-75205 Paris 13, France.4 aut
7001 a Bertaux, Jean-Loupu CNRS UVSQ IPSL, LATMOS, 11 Blvd Alembert, F-78280 Guyancourt, France.4 aut
7001 a Boudreault, Steveu Max Planck Inst Sonnensyst Forsch, Justus von Liebig Weg 3, D-37077 Gottingen, Germany.4 aut
7001 a Cremonese, Gabrieleu INAF, Osservatorio Astron Padova, Vic Osservatorio 5, I-35122 Padua, Italy.4 aut
7001 a Da Deppo, Vaniau CNR IFN UOS Padova LUXOR, Via Trasea 7, I-35131 Padua, Italy.4 aut
7001 a Davidsson, Bjornu NASA, Jet Prop Lab, 4800 Oak Grove Dr, Pasadena, CA 91109 USA.4 aut
7001 a Debei, Stefanou Univ Padua, Dept Mech Engn, Via Venezia 1, I-35131 Padua, Italy.4 aut
7001 a De Cecco, Mariolinou Univ Trento, UNITN, Via Mesiano 77, I-38100 Trento, Italy.4 aut
7001 a Deller, Jakobu Max Planck Inst Sonnensyst Forsch, Justus von Liebig Weg 3, D-37077 Gottingen, Germany.4 aut
7001 a Fornasier, Soniau Univ Paris Diderot, Univ Paris 06, CNRS, LESIA Observ Paris, 5 Pl J Janssen, F-92195 Meudon, France.;Univ Paris Diderot, Sorbonne Paris Cite, 4 Rue Elsa Morante, F-75205 Paris 13, France.4 aut
7001 a Fulle, Marcou INAF, Osservatorio Astron Trieste, Via Tiepolo 11, I-34143 Trieste, Italy.4 aut
7001 a Gicquel, Adelineu Max Planck Inst Sonnensyst Forsch, Justus von Liebig Weg 3, D-37077 Gottingen, Germany.4 aut
7001 a Groussin, Olivier4 aut
7001 a Gutierrez, Pedro J.u CSIC, Inst Astrofis Andalucia, Glorieta Astron, E-18008 Granada, Spain.4 aut
7001 a Guetler, Carstenu Max Planck Inst Sonnensyst Forsch, Justus von Liebig Weg 3, D-37077 Gottingen, Germany.4 aut
7001 a Hofmann, Marcu Max Planck Inst Sonnensyst Forsch, Justus von Liebig Weg 3, D-37077 Gottingen, Germany.4 aut
7001 a Hoefner, Sebastianu Max Planck Inst Sonnensyst Forsch, Justus von Liebig Weg 3, D-37077 Gottingen, Germany.4 aut
7001 a Hviid, Stubbe F.u Deutsch Zentrum Luft & Raumfahrt DLR, Inst Planetenforsch, Rutherfordstr 2, D-12489 Berlin, Germany.4 aut
7001 a Ip, Wing-Huenu Natl Cent Univ, Inst Space Sci, Chungli 32054, Taiwan.4 aut
7001 a Jorda, Laurentu Aix Marseille Univ, CNRS, LAM, UMR 7326, F-13388 Marseille, France.4 aut
7001 a Knollenberg, Joergu Deutsch Zentrum Luft & Raumfahrt DLR, Inst Planetenforsch, Rutherfordstr 2, D-12489 Berlin, Germany.4 aut
7001 a Kramm, J. -Raineru Max Planck Inst Sonnensyst Forsch, Justus von Liebig Weg 3, D-37077 Gottingen, Germany.4 aut
7001 a Kuehrt, Ekkehardu Deutsch Zentrum Luft & Raumfahrt DLR, Inst Planetenforsch, Rutherfordstr 2, D-12489 Berlin, Germany.4 aut
7001 a Kuppers, Michaelu ESA, European Space Astron Ctr, Operat Dept, POB 78, Madrid 28691, Spain.4 aut
7001 a La Forgia, Fiorangelau Univ Padua, Dept Phys & Astron G Galilei, Vic Osservatorio 3, I-35122 Padua, Italy.4 aut
7001 a Lara, Luisa M.u CSIC, Inst Astrofis Andalucia, Glorieta Astron, E-18008 Granada, Spain.4 aut
7001 a Lee, Jui-Chiu Natl Cent Univ, Inst Space Sci, Chungli 32054, Taiwan.4 aut
7001 a Lin, Zhong-Yiu Natl Cent Univ, Inst Space Sci, Chungli 32054, Taiwan.4 aut
7001 a Lopez Moreno, Jose J.u CSIC, Inst Astrofis Andalucia, Glorieta Astron, E-18008 Granada, Spain.4 aut
7001 a Marzari, Francescou Univ Padua, Dept Phys & Astron G Galilei, Vic Osservatorio 3, I-35122 Padua, Italy.4 aut
7001 a Michalik, Haraldu TU Braunschweig, Inst Datentech & Kommunikat Snetze, Hans Sommer Str 66, D-38106 Braunschweig, Germany.4 aut
7001 a Mottola, Stefanou Deutsch Zentrum Luft & Raumfahrt DLR, Inst Planetenforsch, Rutherfordstr 2, D-12489 Berlin, Germany.4 aut
7001 a Preusker, Franku Deutsch Zentrum Luft & Raumfahrt DLR, Inst Planetenforsch, Rutherfordstr 2, D-12489 Berlin, Germany.4 aut
7001 a Scholten, Franku Deutsch Zentrum Luft & Raumfahrt DLR, Inst Planetenforsch, Rutherfordstr 2, D-12489 Berlin, Germany.4 aut
7001 a Thomas, Nicholasu Univ Bern, Inst Phys, Sidlerstr 5, CH-3012 Bern, Switzerland.4 aut
7001 a Toth, Imreu Aix Marseille Univ, CNRS, LAM, UMR 7326, F-13388 Marseille, France.;Hungarian Acad Sci, Observ, POB 67, H-1525 Budapest, Hungary.4 aut
7001 a Tubiana, Ceciliau Max Planck Inst Sonnensyst Forsch, Justus von Liebig Weg 3, D-37077 Gottingen, Germany.4 aut
7102 a NASA, Ames Res Ctr, Moffett Field, CA 94035 USA.;Univ Padua, CISAS, Ctr Studies & Act Space, Via Venezia 15, I-35131 Padua, Italy.b INAF, Osservatorio Astron Padova, Vic Osservatorio 5, I-35122 Padua, Italy.4 org
7730 t Astronomy and Astrophysicsd : EDP Sciencesg 592q 592x 0004-6361x 1432-0746
8564 u https://www.aanda.org/articles/aa/pdf/2016/08/aa28887-16.pdf
8564 8u https://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-308790
8564 8u https://doi.org/10.1051/0004-6361/201628887

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