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The 2011 October Draconids outburst-I. Orbital elements, meteoroid fluxes and 21P/Giacobini-Zinner delivered mass to Earth

Opened Access The 2011 October Draconids outburst-I. Orbital elements, meteoroid fluxes and 21P/Giacobini-Zinner delivered mass to Earth

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Autor: Trigo-Rodríguez, Josep Maria
Madiedo Gil, José María
Williams, Iwan P.
Dergham, Joan
Cortés, Jordi
Castro-Tirado, A. J.
Ortiz, J. L.
Zamorano G., Jaime
Ocaña, Francisco
Izquierdo, Jaime
Departamento: Universidad de Sevilla. Departamento de Física Atómica, Molecular y Nuclear
Fecha: 2013
Publicado en: Monthly Notices of the Royal Astronomical Society, 433 (1), 560-570.
Tipo de documento: Artículo
Resumen: On 2011 October 8, the Earth crossed the dust trails left by comet 21P/Giacobini-Zinner during its 19th and 20th century perihelion approaches with the comet being close to perihelion. The geometric circumstances of that encounter were thus favourable to produce a meteor storm, but the trails were much older than in the 1933 and 1946 historical encounters. As a consequence the 2011 October Draconid display exhibited several activity peaks with Zenithal Hourly Rates of about 400 meteors h-1. In fact, if the display had not been forecasted, it could have passed almost unnoticed as was strongly attenuated for visual observers due to the Moon. This suggests that most meteor storms of a similar nature could have passed historically unnoticed under unfavourable weather and Moon observing conditions. The possibility of obtaining information on the physical properties of cometary meteoroids penetrating the atmosphere under low geocentric velocity encounter circumstances motivated us to set up...
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Cita: Trigo-Rodríguez, J.M., Madiedo Gil, J.M., Williams, I.P., Dergham, J., Cortés, J., Castro-Tirado, A.J.,...,Izquierdo, J. (2013). The 2011 October Draconids outburst-I. Orbital elements, meteoroid fluxes and 21P/Giacobini-Zinner delivered mass to Earth. Monthly Notices of the Royal Astronomical Society, 433 (1), 560-570.
Tamaño: 1.414Mb
Formato: PDF

URI: https://hdl.handle.net/11441/71351

DOI: 10.1093/mnras/stt749

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