English   español  
Por favor, use este identificador para citar o enlazar a este item: http://hdl.handle.net/10261/10749
logo share SHARE logo core CORE   Add this article to your Mendeley library MendeleyBASE

Visualizar otros formatos: MARC | Dublin Core | RDF | ORE | MODS | METS | DIDL
Exportar a otros formatos:

The outburst of the κ Cygnids in 2007: clues about the catastrophic break up of a comet to produce an Earth-crossing meteoroid stream

AutorTrigo-Rodríguez, Josep María ; Madiedo, José M.; Williams, Iwan P.; Castro-Tirado, Alberto J.
Palabras claveComets: general
Meteors, meteoroids
Minor planets, asteroids
Fecha de publicaciónene-2009
EditorBlackwell Publishing
CitaciónMonthly Notices of the Royal Astronomical Society (MNRAS) 392(1): 367-375 (2009)
ResumenUsing high-resolution, low-scan-rate, all-sky CCD cameras and high-level CCD video cameras, the Spanish Meteor and fireball Network (SPMN) recorded the 2007 κ Cygnid fireball outburst from several observing stations. Here, accurate trajectory, radiant and orbital data obtained for the κ Cygnid meteor are presented. The typical astrometric uncertainty is 1–2 arcmin, while velocity determination errors are of the order of 0.3–0.6 km s−1, though this depends on the distance of each event to the station and its particular viewing geometry. The observed orbital differences among 1993 and 2007 outbursts support the hypothesis that the formation of this meteoroid stream is a consequence of the fragmentation of a comet nucleus. Such disruptive process proceed as a cascade, where the break up of the progenitor body leads to produce small remnants, some fully disintegrate into different clumps of particles and other remaining as dormant objects such as 2008ED69, 2001MG1 and 2004LA12 which are now observed as near-Earth asteroids. In addition to the orbital data, we present a unique spectrum of a bright κ Cygnid fireball revealing that the main rocky components have chondritic abundances, and estimations of the tensile strength of those fireballs that exhibited a catastrophic disruption behaviour. All this evidence of the structure and composition of the κ Cygnid meteoroids is consistent with being composed by fine-grained materials typically released from comets.
Descripción9 pages, 3 figures.-- Published online Nov 25, 2008.
Versión del editorhttp://dx.doi.org/10.1111/j.1365-2966.2008.14060.x
Aparece en las colecciones: (ICE) Artículos
(IAA) Artículos
Ficheros en este ítem:
No hay ficheros asociados a este ítem.
Mostrar el registro completo

Artículos relacionados:

NOTA: Los ítems de Digital.CSIC están protegidos por copyright, con todos los derechos reservados, a menos que se indique lo contrario.