Absolute calibration of the infrared flux from Vega at 1.24, 2.20, 3.76 and 4.6 μm by comparison with a standard furnace.
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.
- Publication:
-
Monthly Notices of the Royal Astronomical Society
- Pub Date:
- December 1983
- DOI:
- 10.1093/mnras/205.3.897
- Bibcode:
- 1983MNRAS.205..897B
- Keywords:
-
- Calibrating;
- Flux Quantization;
- Infrared Astronomy;
- Radiant Flux Density;
- Stellar Radiation;
- Atmospheric Models;
- Furnaces;
- Monochromatic Radiation;
- Stellar Atmospheres;
- Astronomy;
- Infrared Radiation:Stars;
- Stars:Infrared Radiation