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| Fältnamn | Indikatorer | Metadata |
|---|---|---|
| 000 | 09638naa a2200973 4500 | |
| 001 | oai:DiVA.org:uu-295585 | |
| 003 | SwePub | |
| 008 | 160608s2016 | |||||||||||000 ||eng| | |
| 024 | 7 | a https://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-2955852 URI |
| 024 | 7 | a https://doi.org/10.1051/0004-6361/2015275642 DOI |
| 040 | a (SwePub)uu | |
| 041 | a engb eng | |
| 042 | 9 SwePub | |
| 072 | 7 | a ref2 swepub-contenttype |
| 072 | 7 | a art2 swepub-publicationtype |
| 100 | 1 | a Moreno, F.u CSIC, Inst Astrofis Andalucia, Glorieta Astron S-N, E-18008 Granada, Spain.4 aut |
| 245 | 1 0 | a The dust environment of comet 67P/Churyumov-Gerasimenko from Rosetta OSIRIS and VLT observations in the 4.5 to 2.9 AU heliocentric distance range inbound |
| 264 | c 2016-03-07 | |
| 264 | 1 | b EDP Sciences,c 2016 |
| 338 | a print2 rdacarrier | |
| 520 | a Context: The ESA Rosetta spacecraft, currently orbiting around cornet 67P/Churyumov-Gerasimenko, has already provided in situ measurements of the dust grain properties from several instruments, particularly OSIRIS and GIADA. We propose adding value to those measurements by combining them with ground-based observations of the dust tail to monitor the overall, time-dependent dust-production rate and size distribution.Aims: To constrain the dust grain properties, we take Rosetta OSIRIS and GIADA results into account, and combine OSIRIS data during the approach phase (from late April to early June 2014) with a large data set of ground-based images that were acquired with the ESO Very Large Telescope (VLT) from February to November 2014.Methods: A Monte Carlo dust tail code, which has already been used to characterise the dust environments of several comets and active asteroids, has been applied to retrieve the dust parameters. Key properties of the grains (density, velocity, and size distribution) were obtained from. Rosetta observations: these parameters were used as input of the code to considerably reduce the number of free parameters. In this way, the overall dust mass-loss rate and its dependence on the heliocentric distance could be obtained accurately.Results: The dust parameters derived from the inner coma measurements by OSIRIS and GIADA and from distant imaging using VLT data are consistent, except for the power index of the size-distribution function, which is alpha = -3, instead of alpha = -2, for grains smaller than 1 mm. This is possibly linked to the presence of fluffy aggregates in the coma. The onset of cometary activity occurs at approximately 4.3 AU, with a dust production rate of 0.5 kg/s, increasing up to 15 kg/s at 2.9 AU. This implies a dust-to-gas mass ratio varying between 3.8 and 6.5 for the best-fit model when combined with water-production rates from the MIRO experiment. | |
| 650 | 7 | a NATURVETENSKAPx Fysikx Astronomi, astrofysik och kosmologi0 (SwePub)103052 hsv//swe |
| 650 | 7 | a NATURAL SCIENCESx Physical Sciencesx Astronomy, Astrophysics and Cosmology0 (SwePub)103052 hsv//eng |
| 653 | a comets: individual: 67P/Churyumov-Gerasimenko | |
| 653 | a methods: data analysis | |
| 653 | a techniques: photometric | |
| 700 | 1 | a Snodgrass, C.u Open Univ, Dept Phys Sci, Planetary & Space Sci, Walton Hall, Milton Keynes MK7 6AA, Bucks, England.4 aut |
| 700 | 1 | a Hainaut, O.u European So Observ, Karl Schwarschild Str 2, D-85748 Garching, Germany.4 aut |
| 700 | 1 | a Tubiana, C.u Max Planck Inst Sonnensyst Forsch, Justus von Liebig Weg 3, D-37077 Gottingen, Germany.4 aut |
| 700 | 1 | a Sierks, H.u Max Planck Inst Sonnensyst Forsch, Justus von Liebig Weg 3, D-37077 Gottingen, Germany.4 aut |
| 700 | 1 | a Barbieri, C.u Univ Padua, Dept Phys & Astron G Galilei, Vic Osservatorio 3, I-35122 Padua, Italy.;Univ Padua, Ctr Studies & Activ Space CISAS G Colombo, Via Venezia 15, I-35131 Padua, Italy.4 aut |
| 700 | 1 | a Lamy, P. L.u Aix Marseille Univ, CNRS, LAM, UMR 7326, F-13388 Marseille, France.4 aut |
| 700 | 1 | a Rodrigo, R.u European Space Agcy, European Space Astron Ctr, Ctr Astrobiol INTA CSIC, POB 78, Madrid 28691, Spain.;Int Space Sci Inst, Hallerstr 6, CH-3012 Bern, Switzerland.4 aut |
| 700 | 1 | a Koschny, D.u European Space Agcy, Res & Sci Support Dept, NL-2201 Noordwijk, Netherlands.4 aut |
| 700 | 1 | a Rickman, Hansu Uppsala universitet,Teoretisk astrofysik,PAS Space Res Ctr, Bartycka 18A, PL-00716 Warsaw, Poland.4 aut0 (Swepub:uu)hansrick |
| 700 | 1 | a Keller, H. U.u Tech Univ Carolo Wilhelmina Braunschweig, Inst Geophys & Extraterr Phys, D-38106 Braunschweig, Germany.4 aut |
| 700 | 1 | a Agarwal, J.u Max Planck Inst Sonnensyst Forsch, Justus von Liebig Weg 3, D-37077 Gottingen, Germany.4 aut |
| 700 | 1 | a A'Hearn, M. F.u Univ Maryland, Dept Astron, College Pk, MD 20742 USA.4 aut |
| 700 | 1 | a Barucci, M. A.u Univ Paris Diderot, UPMC, CNRS, Observ Paris,LESIA, 5 Pl J Janssen, F-92195 Meudon, France.4 aut |
| 700 | 1 | a Bertaux, J-Lu CNRS UVSQ IPSL, LATMOS, 11 Bd Alembert, F-78280 Guyancourt, France.4 aut |
| 700 | 1 | a Bertini, I.u Univ Padua, Ctr Studies & Activ Space CISAS G Colombo, Via Venezia 15, I-35131 Padua, Italy.4 aut |
| 700 | 1 | a Besse, S.u European Space Agcy, Res & Sci Support Dept, NL-2201 Noordwijk, Netherlands.4 aut |
| 700 | 1 | a Bodewits, D.u Univ Maryland, Dept Astron, College Pk, MD 20742 USA.4 aut |
| 700 | 1 | a Cremonese, G.u Osserv Astron Padova, INAF, Vic Osservatorio 5, I-35122 Padua, Italy.4 aut |
| 700 | 1 | a Da Deppo, V.u CNR IFN UOS Padova LUXOR, Via Trasea 7, I-35131 Padua, Italy.4 aut |
| 700 | 1 | a Davidsson, Björnu Uppsala universitet,Teoretisk astrofysik4 aut0 (Swepub:uu)bjoda312 |
| 700 | 1 | a Debei, S.u Univ Padua, Dept Ind Engn, Via Venezia 1, I-35131 Padua, Italy.4 aut |
| 700 | 1 | a De Cecco, M.u Univ Trento, Via Sommarive 9, I-38123 Trento, Italy.4 aut |
| 700 | 1 | a Ferri, F.u Univ Padua, Ctr Studies & Activ Space CISAS G Colombo, Via Venezia 15, I-35131 Padua, Italy.4 aut |
| 700 | 1 | a Fornasier, S.u Univ Paris Diderot, UPMC, CNRS, Observ Paris,LESIA, 5 Pl J Janssen, F-92195 Meudon, France.4 aut |
| 700 | 1 | a Fulle, M.u Osserv Astron Trieste, INAF, Via Tiepolo 11, I-34143 Trieste, Italy.4 aut |
| 700 | 1 | a Groussin, O.u Aix Marseille Univ, CNRS, LAM, UMR 7326, F-13388 Marseille, France.4 aut |
| 700 | 1 | a Gutierrez, P. J.u CSIC, Inst Astrofis Andalucia, Glorieta Astron S-N, E-18008 Granada, Spain.4 aut |
| 700 | 1 | a Gutierrez-Marques, P.u Max Planck Inst Sonnensyst Forsch, Justus von Liebig Weg 3, D-37077 Gottingen, Germany.4 aut |
| 700 | 1 | a Guettler, C.u Max Planck Inst Sonnensyst Forsch, Justus von Liebig Weg 3, D-37077 Gottingen, Germany.4 aut |
| 700 | 1 | a Hviid, S. F.u DLR, Inst Planetenforsch, Rutherfordstr 2, D-12489 Berlin, Germany.4 aut |
| 700 | 1 | a Ip, W. -H4 aut |
| 700 | 1 | a Jorda, L.u Aix Marseille Univ, CNRS, LAM, UMR 7326, F-13388 Marseille, France.4 aut |
| 700 | 1 | a Knollenberg, J.u DLR, Inst Planetenforsch, Rutherfordstr 2, D-12489 Berlin, Germany.4 aut |
| 700 | 1 | a Kovacs, G.u Max Planck Inst Sonnensyst Forsch, Justus von Liebig Weg 3, D-37077 Gottingen, Germany.4 aut |
| 700 | 1 | a Kramm, J. -R4 aut |
| 700 | 1 | a Kuehrt, E.u DLR, Inst Planetenforsch, Rutherfordstr 2, D-12489 Berlin, Germany.4 aut |
| 700 | 1 | a Kueppers, M.u ESA ESAC, POB 78, Villanueva De La Canada 28691, Spain.4 aut |
| 700 | 1 | a Lara, L. M.u CSIC, Inst Astrofis Andalucia, Glorieta Astron S-N, E-18008 Granada, Spain.4 aut |
| 700 | 1 | a Lazzarin, M.u Univ Padua, Dept Phys & Astron G Galilei, Vic Osservatorio 3, I-35122 Padua, Italy.4 aut |
| 700 | 1 | a Lopez-Moreno, J. J.u CSIC, Inst Astrofis Andalucia, Glorieta Astron S-N, E-18008 Granada, Spain.4 aut |
| 700 | 1 | a Marzari, F.u Univ Padua, Dept Phys & Astron G Galilei, Vic Osservatorio 3, I-35122 Padua, Italy.4 aut |
| 700 | 1 | a Mottola, S.u DLR, Inst Planetenforsch, Rutherfordstr 2, D-12489 Berlin, Germany.4 aut |
| 700 | 1 | a Naletto, G.u Univ Padua, Ctr Studies & Activ Space CISAS G Colombo, Via Venezia 15, I-35131 Padua, Italy.;CNR IFN UOS Padova LUXOR, Via Trasea 7, I-35131 Padua, Italy.;Univ Padua, Dept Informat Engn, Via Gradenigo 6-B, I-35131 Padua, Italy.4 aut |
| 700 | 1 | a Oklay, N.u Max Planck Inst Sonnensyst Forsch, Justus von Liebig Weg 3, D-37077 Gottingen, Germany.4 aut |
| 700 | 1 | a Pajola, M.u Univ Padua, Ctr Studies & Activ Space CISAS G Colombo, Via Venezia 15, I-35131 Padua, Italy.4 aut |
| 700 | 1 | a Thomas, N.u Univ Bern, Inst Phys, Sidlerstr 5, CH-3012 Bern, Switzerland.4 aut |
| 700 | 1 | a Vincent, J. B.u Max Planck Inst Sonnensyst Forsch, Justus von Liebig Weg 3, D-37077 Gottingen, Germany.4 aut |
| 700 | 1 | a Della Corte, V.u INAF, IAPS, Via Foss Lavaliere 100, I-00133 Rome, Italy.4 aut |
| 700 | 1 | a Fitzsimmons, A.u Queens Univ Belfast, Sch Phys & Astron, Astrophys Res Ctr, Belfast BT7 1NN, Antrim, North Ireland.4 aut |
| 700 | 1 | a Faggi, S.u Osserv Astrofis Arcetri, INAF, Largo E Fermi 5, I-50125 Florence, Italy.4 aut |
| 700 | 1 | a Jehin, E.u Univ Liege, Inst Astrophys & Geophys, B-4000 Liege, Belgium.4 aut |
| 700 | 1 | a Opitom, C.u Univ Liege, Inst Astrophys & Geophys, B-4000 Liege, Belgium.4 aut |
| 700 | 1 | a Tozzi, G-P4 aut |
| 710 | 2 | a CSIC, Inst Astrofis Andalucia, Glorieta Astron S-N, E-18008 Granada, Spain.b Open Univ, Dept Phys Sci, Planetary & Space Sci, Walton Hall, Milton Keynes MK7 6AA, Bucks, England.4 org |
| 773 | 0 | t Astronomy and Astrophysicsd : EDP Sciencesg 587q 587x 0004-6361x 1432-0746 |
| 856 | 4 | u https://www.aanda.org/articles/aa/pdf/2016/03/aa27564-15.pdf |
| 856 | 4 8 | u https://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-295585 |
| 856 | 4 8 | u https://doi.org/10.1051/0004-6361/201527564 |
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