Astronomy and Astrophysics – Astronomy
Scientific paper
Mar 1997
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1997aj....113.1152f&link_type=abstract
Astronomical Journal v.113, p.1152
Astronomy and Astrophysics
Astronomy
Scientific paper
The first ultraviolet (UV) linear spectropolarimetry of Mars using the Wisconsin Ultraviolet PhotoPolarimeter Experiment (WUPPE) was obtained on 1995 March 12 at a phase angle of 21.7°. A ground-based support observation was taken within 5 h, providing a total spectral coverage of 2100-10 200 Å. The plane of polarization changes by 900 at 4600 Å. The UV polarization increases with decreasing wavelength, due to atmospheric scattering. A plane parallel, optically thin, atmosphere is used to model the polarization data, from which the optical depth of the atmosphere is derived. Assuming a pure CO2 atmosphere a total pressure of 6 mbar is obtained. The Lambert albedo of the surface is obtained in the wavelength range of 2100-3100 Å.
Anderson Martha C.
Babler Brian L.
Bjorkman Karen S.
Code Arthur D.
Edgar Richard J.
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