Astronomy and Astrophysics – Astronomy
Scientific paper
Oct 2000
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2000dps....32.0901r&link_type=abstract
American Astronomical Society, DPS Meeting #32, #09.01; Bulletin of the American Astronomical Society, Vol. 32, p.1005
Astronomy and Astrophysics
Astronomy
Scientific paper
Hubble Space Telescope images of Uranus obtained in June 2000 show several discrete clouds near the sunrise line at 42° N latitude, including one with a contrast of 2.5 at 800-1000 nm wavelength. The derived zonal wind speed of 161+/- 6 m/s westward at this latitude is very close to that at the equivalent southern latitude at the time of the Voyager encounter. A discrete feature detected at 39° S latitude has a speed of 132+/- 8 m/s westward, which places it right on the Voyager zonal wind profile. Latitudinal bands are visible longward of 600 nm, but not in 467-nm and 547-nm images obtained in August 2000. Center-to-limb profiles at all latitudes south of 20° N will be compared to vertical structure models derived from HST images obtained in 1997 to characterize long-term changes in Uranus' latitude bands. This work was funded through Grants GO-08680 and SNAP-08634, submitted to the Space Science Telescope Institute, which is operated by the Association of Universities for Research in Astronomy.
Hammel Heidi Beth
Lockwood Wesley G.
Marley Mark
Rages Kathy Ann
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