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Catalogue POP – Notice individuelle de publication

Schmitt M. I., Tubiana Cecilia, Güttler Carsten, Sierks Holger, Vincent Jean-Baptiste, El-Maarry Mohamed Ramy, Bodewits Dennis, Mottola Stefano, Fornasier Sonia, Hofmann M., Barbieri Cesare, Lamy Philippe, Rodrigo Rafael, Koschny Detlef, Rickman Hans, A'Hearn M. F., Agarwal Jessica, Barucci Maria Antonella, Bertaux Jean-Loup, Bertini Ivano, Cremonese Gabriele, Da Deppo Vania, Davidsson Björn, Debei Stefano, De Cecco M., Deller Jakob, Fulle Marco, Gicquel Adeline, Groussin Olivier, Gutierrez Pedro J., Hviid Stubbe F., Ip W., Jorda Laurent, Keller Horst Uwe, Knollenberg Jörg, Kramm Rainer, Kührt Ekkehard, Küppers Michael, Lara Luisa M., Lazzarin Monica, López-Moreno José J., Marzari Francesco, Naletto Giampiero, Oklay Nilda, Pajola Maurizio, Prasanna D., Shi X., Scholten Frank, Toth Imre, Thomas Nicholas

Long-term monitoring of comet 67P/Churyumov-Gerasimenko's jets with OSIRIS onboard Rosetta

Monthly notices of the Royal Astronomical Society, 2017, vol. 469, pp. S380-S385

Référence DOI : 10.1093/mnras/stx1780
Référence ADS : 2017MNRAS.469S.380S

Résumé :

We used the OSIRIS camera system onboard the Rosetta spacecraft to monitor jet activity of comet 67P/Churyumov-Gerasimenko. With a monthly cadence, we covered an epoch from 2014 December to 2015 October, thereby including the first equinox and the perihelion passage. Jet features were measured in individual images, which were used to perform a statistical inversion. The study provides maps for the locations of likeliest sources of jet activity on the comet's surface as a function of time. The sources follow the subsolar latitude, show clustering and a broadening of the activity band with time in the Northern hemisphere. In the Southern hemisphere, they are not clustered but show a broader spread over all longitudes which is either related to the north-south dichotomy of the comet's topography or due to a higher insolation during southern summer.

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