Utilizza questo identificativo per citare o creare un link a questo documento:
http://hdl.handle.net/20.500.12386/28219
Campo DC | Valore | Lingua |
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dc.contributor.author | Hasselmann, P. H. | en_US |
dc.contributor.author | Barucci, M. A. | en_US |
dc.contributor.author | Fornasier, S. | en_US |
dc.contributor.author | Feller, C. | en_US |
dc.contributor.author | Deshapriya, J. D. P. | en_US |
dc.contributor.author | Fulchignoni, M. | en_US |
dc.contributor.author | Jost, B. | en_US |
dc.contributor.author | Sierks, H. | en_US |
dc.contributor.author | Barbieri, C. | en_US |
dc.contributor.author | Lamy, P. L. | en_US |
dc.contributor.author | Rodrigo, R. | en_US |
dc.contributor.author | Koschny, D. | en_US |
dc.contributor.author | Rickman, H. | en_US |
dc.contributor.author | A'Hearn, M. | en_US |
dc.contributor.author | Bertaux, J. -L. | en_US |
dc.contributor.author | Bertini, I. | en_US |
dc.contributor.author | CREMONESE, Gabriele | en_US |
dc.contributor.author | Da Deppo, V. | en_US |
dc.contributor.author | Davidsson, B. | en_US |
dc.contributor.author | Debei, S. | en_US |
dc.contributor.author | De Cecco, M. | en_US |
dc.contributor.author | Deller, J. | en_US |
dc.contributor.author | FULLE, Marco | en_US |
dc.contributor.author | Gaskell, R. W. | en_US |
dc.contributor.author | Groussin, O. | en_US |
dc.contributor.author | Gutierrez, P. J. | en_US |
dc.contributor.author | Güttler, C. | en_US |
dc.contributor.author | Hofmann, M. | en_US |
dc.contributor.author | Hviid, S. F. | en_US |
dc.contributor.author | Ip, W. -H. | en_US |
dc.contributor.author | Jorda, L. | en_US |
dc.contributor.author | Keller, H. U. | en_US |
dc.contributor.author | Knollenberg, J. | en_US |
dc.contributor.author | Kovacs, G. | en_US |
dc.contributor.author | Kramm, R. | en_US |
dc.contributor.author | Kührt, E. | en_US |
dc.contributor.author | Küppers, M. | en_US |
dc.contributor.author | Lara, M. L. | en_US |
dc.contributor.author | Lazzarin, M. | en_US |
dc.contributor.author | Lopez-Moreno, J. J. | en_US |
dc.contributor.author | Marzari, F. | en_US |
dc.contributor.author | Mottola, S. | en_US |
dc.contributor.author | Naletto, G. | en_US |
dc.contributor.author | Oklay, N. | en_US |
dc.contributor.author | Pommerol, A. | en_US |
dc.contributor.author | Thomas, N. | en_US |
dc.contributor.author | Tubiana, C. | en_US |
dc.contributor.author | Vincent, J. -B. | en_US |
dc.date.accessioned | 2020-11-09T13:58:29Z | - |
dc.date.available | 2020-11-09T13:58:29Z | - |
dc.date.issued | 2017 | en_US |
dc.identifier.issn | 0035-8711 | en_US |
dc.identifier.uri | http://hdl.handle.net/20.500.12386/28219 | - |
dc.description.abstract | High-resolution OSIRIS/Rosetta images of 67P/Churyumov-Gerasimenko acquired on the night run of 2016 April 9-10 show, at large scale, an opposition effect (OE) spot sweeping across Imhotep as the phase angle ranges from 0° to 17°. In this work, we fitted the phase curve of the whole surface imaged as well as three particular features using both the linear-exponential and Hapke models. These features encompass different types of spectral behaviour: a circular mesa, one venous structure and an assemblage of bright spots, going from red to blue colours. Both the Hapke and linear-exponential parameters indicate a stepwise sharpening of the OE from bright spots to circular mesa. Yet a very broad nonlinear phase curve is verified and no sign of sharp OE associated with a coherent-backscattering mechanism is observed. We estimate that the 67P surface is dominated by opaque, desiccated and larger-than-wavelength irregular grains. Veins and bright spots display photometric properties consistent with surfaces becoming slightly brighter as they are enriched by high-albedo ice grains. We also report the estimation of normal albedo for all cometary regions observed throughout the image sequence. Comparison to pre-perihelion results indicates that far better insolation of northern brighter regions, I.e. Hapi, Hathor and Seth, is sufficient to explain mismatches on the photometric parameters. However, metre-scale photometric analysis of the Imhotep-Ash boundary area advocates for mild darkening (<7 per cent) of the surface at local scale. | en_US |
dc.language.iso | eng | en_US |
dc.title | The opposition effect of 67P/Churyumov-Gerasimenko on post-perihelion Rosetta images | en_US |
dc.type | Article | - |
dc.identifier.doi | 10.1093/mnras/stx1834 | en_US |
dc.identifier.scopus | 2-s2.0-85040810160 | en_US |
dc.identifier.isi | 000443940500051 | en_US |
dc.identifier.url | https://academic.oup.com/mnras/article/469/Suppl_2/S550/4103552 | en_US |
dc.relation.medium | STAMPA | en_US |
dc.relation.volume | 469 | en_US |
dc.relation.firstpage | S550 | en_US |
dc.type.referee | REF_1 | en_US |
dc.description.international | sì | en_US |
dc.contributor.country | ITA | en_US |
dc.contributor.country | USA | en_US |
dc.contributor.country | GBR | en_US |
dc.contributor.country | FRA | en_US |
dc.contributor.country | DEU | en_US |
dc.relation.scientificsector | FIS/05 - ASTRONOMIA E ASTROFISICA | en_US |
dc.relation.journal | MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY | en_US |
dc.type.miur | 262 Articolo in rivista | - |
dc.identifier.adsbibcode | 2017MNRAS.469S.550H | en_US |
dc.description.apc | no | en_US |
dc.description.oa | 1 – prodotto con file in versione Open Access (allegare il file al passo 5-Carica) | en_US |
item.openairecristype | http://purl.org/coar/resource_type/c_18cf | - |
item.openairetype | Article | - |
item.languageiso639-1 | en | - |
item.cerifentitytype | Publications | - |
item.grantfulltext | open | - |
item.fulltext | With Fulltext | - |
crisitem.author.dept | O.A. Padova | - |
crisitem.author.dept | O.A. Trieste | - |
crisitem.author.orcid | 0000-0001-9021-1140 | - |
crisitem.author.orcid | 0000-0001-8435-5287 | - |
crisitem.journal.journalissn | 0035-8711 | - |
crisitem.journal.ance | E112946 | - |
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