Intermediate-brightness equatorial spectrophotometric standards

В. М. Терещенко

2002

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DOI 10.1134/1.1463100
Data confidence 70 medium
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Abstract

We have obtained spectral energy distributions for 41 7 m –8 m stars near the celestial equator (δ=±3°). The λλ3100–7600 Å spectral range is studied with a spectral resolution of 50 Å. The relative rms error in the visible is 1–2%, increasing to 3–5% towards the edges of the wavelength interval studied. All stars are referenced to a single standard, the circumpolar star HD 221525. The synthetic colors of common stars are compared with those observed in four photometric systems: U BV, W BV R, uvby , and that of the TYCHO catalog. The program stars are recommended as secondary spectrophotometric standards.