RT Journal Article
T1 The outburst of the κ Cygnids in 2007: clues about the catastrophic break up of a comet to produce an Earth-crossing meteoroid stream
A1 Trigo Rodríguez, Josep María
A1 Madiedo Gil, José María
A1 Williams, I. P.
A1 Castro Tirado, Alberto J.
AB Using high-resolution, low-scan-rate, all-sky CCD cameras and high-level CCD videocameras, the SPanish Meteor and fireball Network (SPMN) recorded the 2007 κ Cygnidfireball outburst from several observing stations. Here, accurate trajectory, radiantand orbital data obtained for the κ Cygnid meteor are presented. The typical astrometricuncertainty is 1–2 arcmin, while velocity determination errors are of the order of0.3–0.6 kms−1, though this depends on the distance of each event to the station and itsparticular viewing geometry. The observed orbital differences among 1993 and 2007 outburstssupport the hypothesis that the formation of this meteoroid stream is a consequence of thefragmentation of a comet nucleus. Such disruptive process proceed as a cascade, where thebreak up of the progenitor body leads to produce small remnants, some fully disintegrateinto 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 theorbital data, we present a unique spectrum of a bright κ Cygnid fireball revealing that themain rocky components have chondritic abundances, and estimations of the tensile strengthof those fireballs that exhibited a catastrophic disruption behaviour. All this evidence of thestructure and composition of the κ Cygnid meteoroids is consistent with being composed byfine-grained materials typically released from comets.
PB Oxford University Press
SN 0035-8711
SN 1365-2966 (electrónico)
YR 2009
FD 2009
LK http://hdl.handle.net/10272/9418
UL http://hdl.handle.net/10272/9418
LA eng
NO Trigo Rodríguez, J.M., Madiedo Gil, J.M., Williams, I.P., Castro Tirado, A.J.: "The outburst of the κ Cygnids in 2007: clues about the catastrophic break up of a comet to produce an Earth-crossing meteoroid stream".  Monthly Notices of the Royal Astronomical Society. Vol. 392, n. 1, pág. 367-375, (2009). ISSN 0035-8711
DS Repositorio Institucional de la Universidad de Huelva
RD 31 may 2026