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| Titel |
The 2009 Impact on Jupiter observed with Gemini, Keck and HST |
| VerfasserIn |
Imke de Pater, Heidi B. Hammel, Leigh N. Fletcher, Statia Luzscz-Cook, Glenn Orton, Santiago Pérez-Hoyos, Michael H. Wong, Mark Boslough |
| Konferenz |
EGU General Assembly 2010
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| Medientyp |
Artikel
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| Sprache |
Englisch
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| Digitales Dokument |
PDF |
| Erschienen |
In: GRA - Volume 12 (2010) |
| Datensatznummer |
250036554
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| Zusammenfassung |
| Many telescopes engaged in a world-wide observing campaign to observe
an impact site discovered on Jupiter by amateur astronomer Anthony
Wesley on 19 July 2009. Here, we compare mid-infrared images from the
8-m Gemini North telescope, near-infrared images from the 10-m Keck
Telescope (both with and without adaptive optics), and visible-light
observations from the newly-installed WFC3 camera on the Hubble Space
Telescope; the images were all obtained between 22 and 25 July
2009. The anomalous feature near Jupiter's south pole (planetographic
latitude 58 deg S, System-III longitude 305 deg W) had a morphology
and colors similar to jovian sites created in 1994 by medium-sized
(500-m) fragments of Shoemaker-Levy 9. Interestingly, the morphology
of the impact site at mid-IR wavelengths shows some interesting
differences compared to that at visible and near-IR wavelengths. We used
radiative-transfer models on the photometrically- and
radiometrically-calibrated data to constrain the vertical distribution
of particle adundance and size in the impact debris field at different
wavelengths. The data also provide constraints for models of the
physical and chemical processes involved in the impact, allowing a
coherent picture of the event to evolve. |
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