Astronomy and Astrophysics – Astrophysics
Scientific paper
2002-07-29
Astron.Astrophys. 400 (2003) 679-694
Astronomy and Astrophysics
Astrophysics
17 pages, 19 figures; Astronomy and Astrophysics, in press; preprints can be obtained by contacting Leen.Decin@ster.kuleuven.a
Scientific paper
10.1051/0004-6361:20021793
The fine calibration of the ISO-SWS detectors (Infrared Space Observatory - Short Wavelength Spectrometer) has proven to be a delicate problem. We therefore present a detailed spectroscopic study in the 2.38 -- 12 micron wavelength range of a sample of 16 A0 -- M2 stars used for the calibration of ISO-SWS. By investigating the discrepancies between the ISO-SWS data of these sources, the theoretical predictions of their spectra, the high-resolution FTS-KP (Kitt Peak) spectrum of Alpha Boo and the solar FTS-ATMOS (Atmospheric Trace Molecule Spectroscopy) spectrum, both calibration problems and problems in computing the theoretical models and the synthetic spectra are revealed. The underlying reasons for these problems are sought for and the impact on the further calibration of ISO-SWS and on the theoretical modelling is discussed extensively.
Decin Leen
Eriksson Kimmo
Gustafsson Bengt
Hinkle Kenneth
Plez Bertrand
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