The study of the linearity of the Alma-Ata spectrophotometric catalog and its reduction

Details The study of the linearity of the Alma-Ata spectrophotometric catalog and its reduction The study of the linearity of the Alma-Ata spectrophotometric catalog and its reduction

Oct 1988

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1988azh....65.1106t&link_type=abstract

Astronomicheskii Zhurnal (ISSN 0004-6299), vol. 65, Sept.-Oct. 1988, p. 1106-1110. In Russian.

Astronomy and Astrophysics

Astronomy

3

Astronomical Catalogs, Stellar Magnitude, Stellar Spectrophotometry, Nonlinearity, Reference Stars, Ubv Spectra, Visible Spectrum

Scientific paper

Comparing the magnitudes V calculated from the energy distribution E(λ) and the observed ones, the degree of data nonlinearity of Alma-Ata spectrophotometric catalogue has been estimated. It is shown that the data E(λ) obtained with the amplifier "Cactus" depend on the magnitudes of both the star and the standard. The previous conclusion that the existing nonlinearity is practically nonselective has been confirmed. On the basis of repeated observations of 150 stars, reduction coefficients which make the catalogue as a whole homogeneous and more linear, were obtained.

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