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Astron. Astrophys. 351, 1066-1074 (1999)

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2. Observations and results

The spectra of RAFGL7009S and S140 were recorded with the SWS instrument onboard ISO during the 124th and 177th revolutions of the satellite. The SWS01 and SWS06 spectra obtained are part of the SOLSTA and MMDUSTY programs. The data have been rebinned to a resolving power of 500 to 2000 depending on the AOT and wavelength range. The reality of the features was estimated separating the upward and downward scans to compare them, a "true feature" being present in both scans. An overview of the ISO-SWS spectrum of RAFGL7009S between 2.5 and 18 µm has been presented in d'Hendecourt et al. (1996), where ice features, most of them reproduced in the laboratory, are described. We present in Fig. 1, a close up on the CO2 bending mode region at 15.2 µm, which is the main purpose of this paper.

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© European Southern Observatory (ESO) 1999

Online publication: November 16, 1999