Abstract
The second stage in our program to compile a list of regional intermediate-brightness spectrophotometric standards has been completed. We have obtained spectral energy distributions for 24 stars with magnitudes \(7\mathop m\limits_. 0 - 8\mathop m\limits_. 5\) near +40° declination. The range λλ3100–7600 Å was studied with a spectral resolution of 50 Å. The relative rms error of our results in the visible is 1–2%, increasing to 3–5% toward the edges of the studied wavelength interval. All the stars are referenced to a single standard, the circumpolar star HD 221525. The energy distributions were used to compute color indices in the UBV, WBVR, and UPXY ZV S systems, as well as in the system of the TYCHO catalog. The computed and observed values for stars in common with the TYCHO catalog are compared.
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Translated from Astronomicheski\(\overset{\lower0.5em\hbox{$\smash{\scriptscriptstyle\smile}$}}{l} \) Zhurnal, Vol. 78, No. 12, 2001, pp. 1135–1145.
Original Russian Text Copyright © 2001 by Tereshchenko.
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Tereshchenko, V.M. Intermediate-brightness spectrophotometric standards. Standards near +40° declination. Astron. Rep. 45, 1002–1011 (2001). https://doi.org/10.1134/1.1426131
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DOI: https://doi.org/10.1134/1.1426131