Feasibility of a search for jovian oscillations by means of simultaneous photometry at temperature dependent methane bands.

Details Feasibility of a search for jovian oscillations by means of simultaneous photometry at temperature dependent methane bands. Feasibility of a search for jovian oscillations by means of simultaneous photometry at temperature dependent methane bands.

Dec 1999

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1999baas...31.1587a&link_type=abstract

American Astronomical Society, DPS Meeting #31, late abstracts, #59.18; Bulletin of the American Astronomical Society, Vol. 31,

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Integrated-disk photometry at wavelengths where methane absorption has a strong temperature dependence may have the potential to reveal jovian oscillations. Tests using the simultaneous 4-channel Stromgren photometer at the 0.9-m telescope in Sierra Nevada (Spain) have yielded precisions of up to 14 parts per million on a 2.90 mag star in the frequency domain of 500 to 10000 microHz (periods of less than about half an hour) after 7 days of accumulated 6-hour observing runs. These tests are being made to detect oscillations in solar-like stars. We think that the count rate supplied by the integrated light of Jupiter could give a precision well suited for jovian oscillations studies. Here we report on our first attempt to test the feasibility of this technique for Jupiter. The selected channels are the v and y Stromgren bands, one of which overlaps with part of the weak methane band at 543 nm. Although this methane band is so weakly dependent on temperature that color oscillations might not be detectable, we expect at least to test the feasibility of this kind of studies for other wavelength ranges.

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