Poster (Scientific congresses and symposiums)
TRAPPIST monitoring of the activity and composition of the small near-Earth Jupiter Family Comets : 41P and 252P
Moulane, Youssef; Jehin, Emmanuel; José Pozuelos, Francisco et al.
2018European Planetary Science Congress 2018
 

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Abstract :
[en] We monitored 41P and 252P on both sides of perihelion with the TRAPPIST telescopes. The gas species production rates were computed as well as the Afrho parameter for both comets. Our results have shown that the two JFCs have a typical composition according to the Q(C2)/Q(CN) and Q(C3)/Q(CN) ratios but have a low gas and dust activity compared to other JFCs. We found that the activity of 41P is decreasing by about 30% to 40% from one apparition to the next. We confirmed rotation period derived from coma features slowed down by 20 hours in 2 months. 252P has shown an increase in production rates and dust production after perihelion which is believed to be associated with thermal processing of the nucleus surface.
Disciplines :
Space science, astronomy & astrophysics
Author, co-author :
Moulane, Youssef  ;  Space sciences, Technologies & Astrophysics Research (STAR) Institute, Université of Liège, Belgium ; Oukaimeden Observatory, High Energy Physics and Astrophysics Laboratory, Cadi Ayyad University, Morocco
Jehin, Emmanuel  ;  Université de Liège - ULiège > Département d'astrophys., géophysique et océanographie (AGO) > Origines Cosmologiques et Astrophysiques (OrCa)
José Pozuelos, Francisco  ;  Space sciences, Technologies & Astrophysics Research (STAR) Institute, Université of Liège, Belgium
Opitom, Cyrielle;  European Southern Observatory, Alonso de Cordova 3107, Vitacura, Santiago, Chile
Manfroid, Jean  ;  Université de Liège - ULiège > Département d'astrophys., géophysique et océanographie (AGO) > Département d'astrophys., géophysique et océanographie (AGO)
Benkhaldoun, Zouhair;  Oukaimeden Observatory, High Energy Physics and Astrophysics Laboratory, Cadi Ayyad University, Morocco
Daassou, Ahmed;  Oukaimeden Observatory, High Energy Physics and Astrophysics Laboratory, Cadi Ayyad University, Morocco
Gillon, Michaël  ;  Université de Liège - ULiège > Département d'astrophys., géophysique et océanographie (AGO) > Exotic
Language :
English
Title :
TRAPPIST monitoring of the activity and composition of the small near-Earth Jupiter Family Comets : 41P and 252P
Publication date :
01 September 2018
Event name :
European Planetary Science Congress 2018
Event place :
Berlin, Germany
Event date :
16-21 September 2018
Audience :
International
Available on ORBi :
since 11 January 2019

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