Astronomy and Astrophysics – Astrophysics
Scientific paper
Aug 1989
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989ap%26ss.158....9m&link_type=abstract
Astrophysics and Space Science (ISSN 0004-640X), vol. 158, no. 1, Aug. 1989, p. 9-18. Research supported by CONICET and CONICOR.
Astronomy and Astrophysics
Astrophysics
19
Astronomical Observatories, Atmospheric Attenuation, Photoabsorption, Aerosols, Argentina, Molecular Absorption, Ubv Spectra
Scientific paper
The first- and second-order extinction coefficients in the UBVRI and DDO systems are derived for the first time at CASLEO. They define an extinction curve which is discussed in the framework of atmospheric absorption theory. From this curve the first-order extinction coefficients for the Washington and Stromgren systems are inferred. From a photometric point of view, CASLEO occupies a preferred place among the observatories of the world. A comparison of the UBV extinction coefficients obtained at Bosque Alegre with previous determinations supports the conclusion that the sky transparency at this station has deteriorated in the ultraviolet in the last years.
Claria Juan J.
Gomez M. N.
~Minniti Dante
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