|Title:||The Thermal and Compositional Evolution of the Site of the 2009 June 19 Impact in Jupiter: T-Recs imaging and high-resolution spectroscopy |
|Co-I(s):|| Leigh Fletcher, Padma Yanamandra-Fisher, Brenden Fisher, Michelle Edwards, Olivier Mousis, Heidi Hammel, Imke de Pater|
We propose to characterize the evolution of the physical and chemical state of
Jupiter's atmosphereat and around the location of the July 19 impact. This
event provides us with the opportunity to examine the influence of a single
impact, rather than the confusion of often indistinct events in the Comet
Shoemaker-Levy impacts of 1994.
We have begun this sequence with mid-infrared imaging and broad N- and Q-band
survey spectrscopy in the 7 days since our initial verification of the impact
on July 20. Below we make the case for (A) continued imaging of the evolution of
the feature, and (B) high-resolution spectroscopy to follow up our
low-resolution N-band survey.
Based on Shoemaker-Levy 9 observations, we expect the near-IR particulate
"signature" in the atmosphere to be present over a few months, but the mid-IR
temperature and composition to last only over time scales of weeks. At this
time, the energy associated with the impactor is not well characterized and thus
there is considerable uncertainty in the duration of these effects.
T-Recs is the only instrument available to make these observations. Michelle
is off-line until September 23. VISIR (VLT) is off line until Aug 5. The
Subaru director has not consented to change its classical schedule to
accomodate Jupiter observations.