title: Brightness Temperatures of Saturn's Disk and Rings at 400 and 700 Micrometers.
abstract: Saturn was observed in two broad submillimeter photometric bands with the rings nearly edge-on. The observed brightness temperatures fall below the predictions of atmospheric models constructed from data at shorter wavelenths, indicating the presence of an opacity source besides pressure-broadened hydrogen lines in the submillimeter region. In combination with earlier measurements at larger inclination angles, these results yield a 400-micrometer brightness temperature for the rings of approximately 75 K.
authors.forename: S E
authors.initials: SE
authors.lastname: Whitcomb
authors.forename: R H
authors.initials: RH
authors.lastname: Hildebrand
authors.forename: J
authors.initials: J
authors.lastname: Keene