Spectral observations of impact dark spots

Details Spectral observations of impact dark spots Spectral observations of impact dark spots

Jan 1994

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1994em%26p...66...19s&link_type=abstract

Earth, Moon, and Planets (ISSN 0167-9295), vol. 66, no. 1, p. 19-27

Astronomy and Astrophysics

Astronomy

1

Jupiter (Planet), Jupiter Atmosphere, Jupiter Red Spot, Shoemaker-Levy 9 Comet, Albedo, Astronomical Observatories, Cometary Collisions, Galileo Spacecraft, Telescopes

Scientific paper

We carried out a spectral observation of traces of the comet impacts within the wavelength region between 440 and 830 nm. Three dark spots of fragments K, E, and G impact sites were investigated. The spectrum of these dark spots shows no special emission or absorption lines in this observation. The global spectral feature resembles that of Jovian zone cloud rather than that of the belt. While the continuum reflectivity of the dark spots of K and E sites is less than 0.42 at 600 nm, that of the G site is 0.33. These values should be interpreted as an upper limits because of the influence of atmospheric seeing. The equivalent width of the absorption lines at the K sites is also derived. Both the continuum reflectivity and the equivalent width of the dark spots are smaller than those of any Jovian zonal cloud. This indicates that the dark spots are low-albedo cloud formed at the upper atmosphere.

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