Absolute calibration of the infrared flux from Vega at 1.24, 2.20,3.76 and 4.6 m by comparison with a standard furnace
Open Access
- 1 December 1983
- journal article
- Published by Oxford University Press (OUP) in Monthly Notices of the Royal Astronomical Society
- Vol. 205 (3) , 897-905
- https://doi.org/10.1093/mnras/205.3.897
Abstract
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.Keywords
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