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  • Bertini, I.Univ Padua, Dept Phys & Astron G Galilei, Vicolo Osservatorio 3, I-35122 Padua, Italy (author)

The scattering phase function of comet 67P/Churyumov-Gerasimenko coma as seen from the Rosetta/OSIRIS instrument

  • Article/chapterEnglish2017

Publisher, publication year, extent ...

  • 2017-07-22
  • OXFORD UNIV PRESS,2017
  • printrdacarrier

Numbers

  • LIBRIS-ID:oai:DiVA.org:uu-376683
  • https://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-376683URI
  • https://doi.org/10.1093/mnras/stx1850DOI

Supplementary language notes

  • Language:English
  • Summary in:English

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

Notes

  • The study of dust, the most abundant material in cometary nuclei, is pivotal in understanding the original materials forming the Solar system. Measuring the coma phase function provides a tool to investigate the nature of cometary dust. Rosetta/OSIRIS sampled the coma phase function of comet 67P/Churyumov-Gerasimenko, covering a large phase angle range in a small amount of time. Twelve series were acquired in the period from 2015 March to 2016 February for this scientific purpose. These data allowed, after stray light removal, measuring the phase function shape, its reddening, and phase reddening while varying heliocentric and nucleocentric distances. Despite small dissimilarities within different series, we found a constant overall shape. The reflectance has a u-shape with minimum at intermediate phase angles, reaching similar values at the smallest and largest phase angle sampled. The comparison with cometary phase functions in literature indicates OSIRIS curves being consistent with the ones found in many other single comets. The dust has a negligible phase reddening at alpha < 90 degrees, indicating a coma dominated by single scattering. We measured a reddening of [11-14] %/100 nm between 376 and 744 nm. No trend with heliocentric or nucleocentric distance was found, indicating the coma doesn't change its spectrum with time. These results are consistent with single coma grains and close-nucleus coma photometric results. Comparison with nucleus photometry indicates a different backscattering phase function shape and similar reddening values only at alpha < 30 degrees. At larger phase angles, the nucleus becomes significantly redder than the coma.

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  • La Forgia, F.Univ Padua, Dept Phys & Astron G Galilei, Vicolo Osservatorio 3, I-35122 Padua, Italy (author)
  • Tubiana, C.Max Planck Inst Solar Syst Res, Justus von Liebig Weg 3, D-37077 Gottingen, Germany (author)
  • Guettler, C.Max Planck Inst Solar Syst Res, Justus von Liebig Weg 3, D-37077 Gottingen, Germany (author)
  • Fulle, M.INAF, Astron Observ Trieste, Via Tiepolo 11, I-34143 Trieste, Italy (author)
  • Moreno, F.CSIC, Inst Astrophys Andalusia, Glorieta Astronomia S-N, E-18008 Granada, Spain (author)
  • Frattin, E.Univ Padua, Dept Phys & Astron G Galilei, Vicolo Osservatorio 3, I-35122 Padua, Italy;INAF, Astron Observ Padova, Vicolo Osservatorio 5, I-35122 Padua, Italy (author)
  • Kovacs, G.Max Planck Inst Solar Syst Res, Justus von Liebig Weg 3, D-37077 Gottingen, Germany (author)
  • Pajola, M.NASA, Ames Res Ctr, Moffett Field, CA 94035 USA;Univ Padua, Ctr Studies & Activ Space CISAS G Colombo, Via Venezia 15, I-35131 Padua, Italy (author)
  • Sierks, H.Max Planck Inst Solar Syst Res, Justus von Liebig Weg 3, D-37077 Gottingen, Germany (author)
  • Barbieri, C.Univ Padua, Dept Phys & Astron G Galilei, Vicolo Osservatorio 3, I-35122 Padua, Italy;Univ Padua, Ctr Studies & Activ Space CISAS G Colombo, Via Venezia 15, I-35131 Padua, Italy (author)
  • Lamy, P.Aix Marseille Univ, CNRS, LAM, UMR 7326, F-13388 Marseille, France (author)
  • Rodrigo, R.CSIC, INTA, Ctr Astrobiol, Madrid 28850, 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,Teoretisk astrofysik,PAS Space Res Ctr, Bartycka 18A, PL-00716 Warsaw, Poland(Swepub:uu)hansrick (author)
  • Keller, H. U.Tech Univ Carolo Wilhelmina Braunschweig, IGEP, Mendelssohnstr 3, D-38106 Braunschweig, Germany;Deutsches Zentrum Luft & Raumfahrt DLR, Inst Planeten Forsch, Rutherfordstr 2, D-12489 Berlin, Germany (author)
  • Agarwal, J.Max Planck Inst Solar Syst Res, Justus von Liebig Weg 3, D-37077 Gottingen, Germany (author)
  • A'Hearn, M. F.Max Planck Inst Solar Syst Res, Justus von Liebig Weg 3, D-37077 Gottingen, Germany;Univ Maryland, Dept Astron, College Pk, MD 20742 USA (author)
  • Barucci, M. A.Univ Paris Diderot 5, Univ Pierre & Marie Curie, CNRS, LESIA,Observ Paris, Pl J Janssen, F-92195 Meudon, France (author)
  • Bertaux, J-L (author)
  • Bodewits, D.Univ Maryland, Dept Astron, College Pk, MD 20742 USA (author)
  • Cremonese, G.INAF, Astron Observ Padova, Vicolo Osservatorio 5, I-35122 Padua, Italy (author)
  • Da Deppo, V.CNR, IFN UOS Padova LUXOR, Via Trasea 7, I-35131 Padua, Italy (author)
  • Davidsson, B.Jet Prop Lab, M-S 183-301,4800 Oak Grove Dr, Pasadena, CA 91109 USA (author)
  • Debei, S.Univ Padua, Dept Ind Engn, Via Venezia 1, I-35131 Padua, Italy (author)
  • De Cecco, M.Univ Trento, Via Sommarive 9, I-38123 Trento, Italy (author)
  • Drolshagen, E.Carl von Ossietzky Univ Oldenburg, Ammerlander Heerstr 114, D-26111 Oldenburg, Germany (author)
  • Ferrari, S.Univ Padua, Ctr Studies & Activ Space CISAS G Colombo, Via Venezia 15, I-35131 Padua, Italy (author)
  • Ferri, F.Univ Padua, Ctr Studies & Activ Space CISAS G Colombo, Via Venezia 15, I-35131 Padua, Italy (author)
  • Fornasier, S.Univ Paris Diderot 5, Univ Pierre & Marie Curie, CNRS, LESIA,Observ Paris, Pl J Janssen, F-92195 Meudon, France (author)
  • Gicquel, A.Max Planck Inst Solar Syst Res, Justus von Liebig Weg 3, D-37077 Gottingen, Germany;Jet Prop Lab, M-S 183-301,4800 Oak Grove Dr, Pasadena, CA 91109 USA (author)
  • Groussin, O.Aix Marseille Univ, CNRS, LAM, UMR 7326, F-13388 Marseille, France (author)
  • Gutierrez, P. J.CSIC, Inst Astrophys Andalusia, Glorieta Astronomia S-N, E-18008 Granada, Spain (author)
  • Hasselmann, P. H.Univ Paris Diderot 5, Univ Pierre & Marie Curie, CNRS, LESIA,Observ Paris, Pl J Janssen, F-92195 Meudon, France (author)
  • Hviid, S. F.Deutsches Zentrum Luft & Raumfahrt DLR, Inst Planeten Forsch, Rutherfordstr 2, D-12489 Berlin, Germany (author)
  • Ip, W. -H (author)
  • Jorda, L.Aix Marseille Univ, CNRS, LAM, UMR 7326, F-13388 Marseille, France (author)
  • Knollenberg, J.Deutsches Zentrum Luft & Raumfahrt DLR, Inst Planeten Forsch, Rutherfordstr 2, D-12489 Berlin, Germany (author)
  • Kramm, J. R.Max Planck Inst Solar Syst Res, Justus von Liebig Weg 3, D-37077 Gottingen, Germany (author)
  • Kuehrt, E.Deutsches Zentrum Luft & Raumfahrt DLR, Inst Planeten Forsch, Rutherfordstr 2, D-12489 Berlin, Germany (author)
  • Kuppers, M.ESA, European Space Astron Ctr, Operat Dept, POB 78, E-28691 Villanueva De LaCanada, Madrid, Spain (author)
  • Lara, L. M.CSIC, Inst Astrophys Andalusia, Glorieta Astronomia S-N, E-18008 Granada, Spain (author)
  • Lazzarin, M.Univ Padua, Dept Phys & Astron G Galilei, Vicolo Osservatorio 3, I-35122 Padua, Italy (author)
  • Lin, Z. -Y (author)
  • Lopez Moreno, J. J.CSIC, Inst Astrophys Andalusia, Glorieta Astronomia S-N, E-18008 Granada, Spain (author)
  • Lucchetti, A.INAF, Astron Observ Padova, Vicolo Osservatorio 5, I-35122 Padua, Italy (author)
  • Marzari, F.Univ Padua, Dept Phys & Astron G Galilei, Vicolo Osservatorio 3, I-35122 Padua, Italy (author)
  • Massironi, M.Univ Padua, Ctr Studies & Activ Space CISAS G Colombo, Via Venezia 15, I-35131 Padua, Italy;Univ Padua, Dept Geosci, Via G Gradenigo 6, I-35131 Padua, Italy (author)
  • Mottola, S.Deutsches Zentrum Luft & Raumfahrt DLR, Inst Planeten Forsch, Rutherfordstr 2, D-12489 Berlin, Germany (author)
  • Naletto, G.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 (author)
  • Oklay, N.Deutsches Zentrum Luft & Raumfahrt DLR, Inst Planeten Forsch, Rutherfordstr 2, D-12489 Berlin, Germany (author)
  • Ott, T.Carl von Ossietzky Univ Oldenburg, Ammerlander Heerstr 114, D-26111 Oldenburg, Germany (author)
  • Penasa, L.Univ Padua, Ctr Studies & Activ Space CISAS G Colombo, Via Venezia 15, I-35131 Padua, Italy (author)
  • Thomas, N.Univ Bern, Phys Inst, CH-3012 Bern, Switzerland (author)
  • Vincent, J. -B (author)
  • Univ Padua, Dept Phys & Astron G Galilei, Vicolo Osservatorio 3, I-35122 Padua, ItalyMax Planck Inst Solar Syst Res, Justus von Liebig Weg 3, D-37077 Gottingen, Germany (creator_code:org_t)

Related titles

  • In:Monthly notices of the Royal Astronomical Society: OXFORD UNIV PRESS469, s. S404-S4150035-87111365-2966

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