A Double Planetary Occultation By the Outer Gas Giant Neptune

Details A Double Planetary Occultation By the Outer Gas Giant Neptune A Double Planetary Occultation By the Outer Gas Giant Neptune

Apr 2009

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009sptz.prop60198b&link_type=abstract

Spitzer Proposal ID #60198

Physics

Scientific paper

As a large number of giant exo-planets are being characterized and discovered, the need to understand how gas giants respond to the circumstances of variations in insolation is becoming apparent. The gas giants in our own solar system have not been observed in sufficient detail or over sufficiently long time scales to understand how they respond to seasonal changes. A sensitive trace of seasonally driven atmospheric global evolution is provided by observations of stellar occultation events, which yield nearly instantaneous atmospheric pressure-height profiles at critical seasonal junctures. We propose to observe two of these occultation events of the outer gas giant Neptune, which has recently undergone its summer solstice. The events are nearly consecutive, and viewable only from the SST using IRAC's sub-array capabilities and fortuitous band-pass in the shortest wavelength channel.

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