ISO-SWS calibration and the accurate modelling of cool-star atmospheres - II. General results

Preprint

29 July 2002

preprint
Published by arXiv in arXiv

https://doi.org/10.48550/arXiv.astro-ph/0207621

Abstract

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.

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Version 1, 2002-07-29, ArXiv
Published version: Astronomy & Astrophysics, 400 (2), 679.

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