Measurements of the energy distributions of southern standard stars from 3200 A to 8800 A

Astronomy and Astrophysics – Astrophysics

Scientific paper

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Early Stars, Energy Distribution, Infrared Spectra, Monochromatic Radiation, Reference Stars, Southern Hemisphere, Stellar Spectrophotometry, Calibrating, Data Reduction, Error Analysis

Scientific paper

The monochromatic flux of 14 southern standard stars is measured relative to Alpha Lyr (Vega) using a network of equatorial standard stars. In addition, 12 of these are calibrated in terms of absolute flux by comparison with platinum and copper point blackbodies. The spectrum scans extend from 3200 to 8800 A in steps of 50 A with a maximum bandpass of 20 A. Regions with strong lines are omitted. The systematic error in the region 3200 to 8500 A is estimated to be about 1%, which is also the mean monochromatic scattering between the relative and absolute calibration results.

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