Activity of Comet 103P/Hartley 2 at the time of the EPOXI mission fly-by

Meech, Karen; Tanga, Paolo; Licandro, J.; Bó, Marco Del; Boehnhardt, Hermann; Brucato, John Robert; Lara, Luisa; Patriarchi, Patrizio; Hainaut, Olivier R.; Epifani, Elena Mazzotta; Tozzi, Gian Paolo
Referencia bibliográfica

Icarus, Volume 222, Issue 2, p. 766-773.

Fecha de publicación:
Número de autores
Número de autores del IAC
Número de citas
Número de citas referidas
Comet 103P/Hartley 2 was observed on November 1-6, 2010, coinciding with the fly-by of the space probe EPOXI. The goal was to connect the large scale phenomena observed from the ground, with those at small scale observed from the spacecraft. The comet showed strong activity correlated with the rotation of its nucleus, also observed by the spacecraft. We report here the characterization of the solid component produced by this activity, via observations of the emission in two spectral regions where only grain scattering of the solar radiation is present. We show that the grains produced by this activity had a lifetime of the order of 5 h, compatible with the spacecraft observations of the large icy chunks. Moreover, the grains produced by one of the active regions have a very red color. This suggests an organic component mixed with the ice in the grains.
Proyectos relacionados
Imagen del Proyecto
Pequeños Cuerpos del Sistema Solar
Este Proyecto estudia las propiedades físicas y composicionales de los llamados pequeños cuerpos del Sistema Solar, que incluyen asteroides, objetos helados y cometas. Entre los grupos de mayor interés destacan los objetos trans-neptunianos (TNOs), incluyendo los objetos más lejanos detectados hasta la fecha (Extreme-TNOs o ETNOs); los cometas, y
Julia de
León Cruz