Please use this identifier to cite or link to this item:
http://hdl.handle.net/20.500.12386/32991
DC Field | Value | Language |
---|---|---|
dc.contributor.author | Manzini, F. | en_US |
dc.contributor.author | Oldani, V. | en_US |
dc.contributor.author | Ochner, P. | en_US |
dc.contributor.author | Barbotin, E. | en_US |
dc.contributor.author | BEDIN, Luigi | en_US |
dc.contributor.author | Behrend, R. | en_US |
dc.contributor.author | Fardelli, G. | en_US |
dc.date.accessioned | 2023-01-23T13:44:59Z | - |
dc.date.available | 2023-01-23T13:44:59Z | - |
dc.date.issued | 2021 | en_US |
dc.identifier.issn | 0035-8711 | en_US |
dc.identifier.uri | http://hdl.handle.net/20.500.12386/32991 | - |
dc.description.abstract | The recent close approach of comet C/2020 F3 (NEOWISE) allowed us to study the morphology of its inner coma. From the measurement of the dust ejection velocity on spiral structures expanding around the nucleus, we estimated a mean deprojected expansion velocity V<SUB>d</SUB> = 1.11 ± 0.08 km s<SUP>-1</SUP>. Assuming that a new shell formed after every rotation of the comet, a period of 7.8 ± 0.2 h was derived. The spin axis orientation was estimated at RA 210° ± 10°, Dec. +35° ± 10°. The coma morphology appears related to two strong, diametrically opposite emissions located at mid-latitudes on the nucleus. A qualitative modelling of the coma produced consistent results with a wide range of dust sizes (0.80-800 μm), with inversely correlated densities (0.003-3.0 g cm<SUP>-3</SUP>). Images taken with Vj and r-Sloan filters showed a greater concentration of dust in the first two shells, and an increasing density of radicals emitting in the B and V band passes from the third shell outwards. Striae-like structures in the tail suggest that dust particles have different sizes. | en_US |
dc.language.iso | eng | en_US |
dc.title | Coma morphology and dust emission pattern of comet C/2020 F3 (NEOWISE) | en_US |
dc.type | Article | - |
dc.identifier.doi | 10.1093/mnras/stab1849 | en_US |
dc.identifier.scopus | 2-s2.0-85118164452 | en_US |
dc.identifier.url | https://academic.oup.com/mnras/article/506/4/6195/6311818 | en_US |
dc.identifier.url | http://arxiv.org/abs/2109.02039v1 | en_US |
dc.relation.medium | STAMPA | en_US |
dc.relation.volume | 506 | en_US |
dc.relation.issue | 4 | en_US |
dc.relation.firstpage | 6195 | en_US |
dc.relation.lastpage | 6202 | en_US |
dc.type.referee | REF_1 | en_US |
dc.description.international | sì | 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 | 2021MNRAS.506.6195M | 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.grantfulltext | open | - |
item.cerifentitytype | Publications | - |
item.openairetype | Article | - |
item.openairecristype | http://purl.org/coar/resource_type/c_18cf | - |
item.fulltext | With Fulltext | - |
item.languageiso639-1 | en | - |
crisitem.journal.journalissn | 0035-8711 | - |
crisitem.journal.ance | E112946 | - |
crisitem.author.dept | O.A. Padova | - |
crisitem.author.orcid | 0000-0003-4080-6466 | - |
Appears in Collections: | 1.01 Articoli in rivista |
Files in This Item:
File | Description | Size | Format | |
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stab1849.pdf | Pdf editoriale | 4.79 MB | Adobe PDF | View/Open |
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