Secondary standard stars for absolute spectrophotometry

1983/03/01 by J. B. Oke, James E. Gunn · 190 citations
Physics and Astronomy · Engineering · #Stellar, planetary, and galactic studies #Astronomical Observations and Instrumentation #Calibration and Measurement Techniques

paper · doi:10.1086/160817

openalex publication_date 1983/03/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/04

Abstract

Based on an adopted absolute spectral energy distribution for the primary standard star Alpha Lyrae, absolute fluxes are given for the four very metal-deficient F type subdwarfs HD 19445, HD 84937, BD + 26.2606 deg, and BD + 17.4703 deg. Somewhat inferior data are also given for HD 140283. The data are given for 40-A bands and cover the wavelength range from 3080 A to 12,000 A. The four stars, all near magnitude 9 and distributed around the sky, are intended as secondary standards for absolute spectrophotometry.

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