Please use this identifier to cite or link to this item:
http://hdl.handle.net/20.500.12386/34421
DC Field | Value | Language |
---|---|---|
dc.contributor.author | CARBOGNANI, Albino | en_US |
dc.contributor.author | BUZZONI, Alberto | en_US |
dc.date.accessioned | 2023-10-04T09:36:19Z | - |
dc.date.available | 2023-10-04T09:36:19Z | - |
dc.date.issued | 2020 | en_US |
dc.identifier.issn | 0035-8711 | en_US |
dc.identifier.uri | http://hdl.handle.net/20.500.12386/34421 | - |
dc.description.abstract | We report on accurate BVR<SUB>c</SUB> observations of (6478) Gault, a 5-6 km diameter inner main-belt asteroid in the Phocaea family, notable for its sporadic, comet-like ejection of dust. This curious behaviour has been mainly interpreted as reconfigurations after YORP spin-up, although merging of a contact binary system cannot be fully excluded. We collected optical observations along the 2019 March-April period, at orbital phase angles between 12° and 21°, to search for direct evidence of asteroid quick spinning rotation. A prevailing period value of 3.34 ± 0.02 h is supported by our and other photometric observations. In the YORP spin-up hypothesis, this period points to a bulk density ρ ≈ 1 g cm^{-3}. The mean colours are B - V = +0.82<SUB>±0.3</SUB>, V - R<SUB>c</SUB> = +0.28<SUB>±0.06</SUB>, and B - R<SUB>c</SUB> = +1.11<SUB>±0.4</SUB>, but we have observed a trend towards bluer colour during the April session, with about Δ(B - V) ∼ 0.35 ± 0.09 mag. This colour change can be due to asteroid rotation and support the hypothesis that there is a bluer surface under the Gault's dust. | en_US |
dc.language.iso | eng | en_US |
dc.title | Spinning and colour properties of the active asteroid (6478) Gault | en_US |
dc.type | Article | - |
dc.identifier.doi | 10.1093/mnras/staa208 | en_US |
dc.identifier.scopus | 2-s2.0-85090243042 | en_US |
dc.identifier.url | https://academic.oup.com/mnras/article/493/1/70/5715467 | en_US |
dc.identifier.url | http://arxiv.org/abs/2001.05748v1 | en_US |
dc.relation.medium | STAMPA | en_US |
dc.relation.volume | 493 | en_US |
dc.relation.issue | 1 | en_US |
dc.relation.firstpage | 70 | en_US |
dc.relation.lastpage | 77 | en_US |
dc.type.referee | REF_1 | 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 | 2020MNRAS.493...70C | 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 | OAS Bologna | - |
crisitem.author.dept | OAS Bologna | - |
crisitem.author.orcid | 0000-0002-0737-7068 | - |
crisitem.author.orcid | 0000-0002-6514-1870 | - |
crisitem.journal.journalissn | 0035-8711 | - |
crisitem.journal.ance | E112946 | - |
Appears in Collections: | 1.01 Articoli in rivista |
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File | Description | Size | Format | |
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staa208.pdf | PDF editoriale | 2.79 MB | Adobe PDF | View/Open |
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