CCD spectroscopic observations of Saturn, Uranus, Neptune, and Titan during the 1990 apparitions

DOI: 
10.1016/0019-1035(91)90166-Q
Publication date: 
01/09/1991
Main author: 
Moreno F.
IAA authors: 
Moreno F.;Molina A.;Ortiz J.L.
Authors: 
Moreno F., Molina A., Ortiz J.L.
Journal: 
Icarus
Publication type: 
Article
Volume: 
93
Pages: 
88-95
Number: 
Abstract: 
High signal-to-noise CCD long-slit spectra of Saturn, Uranus, Neptune, and Titan have been recorded at the coudé focus of the 1.52-m telescope at Calar Alto Observatory (Spain) on June 1990. The spectra were obtained in different spectral regions in the wavelength range 4900-9300 Å. The nominal resolution was about 1.2 Å pixel-1. The spatial resolution was 1.2″, which allowed us to obtain spatially resolved spectra on different regions across Saturn's disk. Our model atmospheres for Saturn are consistent with an enrichment of carbon of a factor of two with respect to the solar abundance. The derived haze optical thickness is 13±2, in accordance with previous measurements carried out during the 1986 apparition. The spectra of Uranus, Neptune, and Titan compare well with previous absolute spectrophotometry of these objects by Neff et al. (1984, Icarus 60, 221-235). © 1991.
Database: 
WOK
SCOPUS
ADS
URL: 
https://ui.adsabs.harvard.edu/#abs/1991Icar...93...88M/abstract
ADS Bibcode: 
1991Icar...93...88M
Keywords: