Astronomy and Astrophysics – Astronomy
Scientific paper
Dec 1983
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1983mnras.205..897b&link_type=abstract
Monthly Notices of the Royal Astronomical Society (ISSN 0035-8711), vol. 205, Dec. 1983, p. 897-905.
Astronomy and Astrophysics
Astronomy
51
Calibrating, Flux Quantization, Infrared Astronomy, Radiant Flux Density, Stellar Radiation, Atmospheric Models, Furnaces, Monochromatic Radiation, Stellar Atmospheres
Scientific paper
A determination has been made at Tenerife of the absolute monochromatic flux from Vega at 1.24, 2.20, 3.76 and 4.6 μm with an accuracy of 3 per cent for λ < 4 μm and ≡12 per cent for λ > 4 μm, using a calibrated furnace as standard. The technique differs in detail from that used for similar observations in 1980. The results confirm in general those obtained in 1980, especially at λ ≡ 3.8 μm. Both the 1980 and the 1981 observations show an excess flux of about 7 per cent for λ > 2 μm compared to that calculated by Dreiling & Bell using their model atmosphere for Vega.
Blackwell D. E.
Leggett Sandy K.
Mountain Charles M.
Petford A. D.
Selby M. J.
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