Plutos FUV Spectrum: CO Abundance and FUV Survey Carryover from 3803

Details Plutos FUV Spectrum: CO Abundance and FUV Survey Carryover from 3803 Plutos FUV Spectrum: CO Abundance and FUV Survey Carryover from 3803

Jul 1994

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1994hst..prop.5743t&link_type=abstract

HST Proposal ID #5743

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Hst Proposal Id #5743 Solar System Minor Planets

Scientific paper

We propose FUV observations of Pluto using the FOS/BL with G190H to survey the spectral region 2200-1800 A for absorption features, and the FOS/BL with G130H to survey the spectral region 1608-1200 A for emission features, or fluorescence, in Pluto's atmosphere. The spectral resolutions are delta lambda = 2.3 A and 1.6 A, respectively. A high priority will be to search for the cosmogonically important molecule CO using two vibrational Cameron bands in absorption at 2060 A and 1989 A, and the (1-0) and other 4th positive vibrational bands in emission near 1500 A, in order to determine an accurate CO column abundance and to constrain the rotational temperature of CO. Detection of both emission and absorption bands would set constraints on models of atmospheric escape by providing information on the radial distribution of CO in Pluto's lower atmosphere. We also search for other species, such as NO. Only HST has the sensitivity and spatial resolution to obtain Pluto's FUV spectrum.

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