The SWS post-helium programme: Extending the MK classification to the near infrared

Details The SWS post-helium programme: Extending the MK classification to the near infrared The SWS post-helium programme: Extending the MK classification to the near infrared

Mar 1999

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1999esasp.427..413v&link_type=abstract

The Universe as Seen by ISO. Eds. P. Cox & M. F. Kessler. ESA-SP 427., p. 413

Physics

1

Sws, Stars, Classification, Infrared

Scientific paper

After the liquid Helium of the Infrared Space Observatory (ISO) depleted, the temperature of the focal plane remained low enough to operate the InSb band 1 detectors of the Short-Wavelength Spectrometer (SWS). The time available before and during the engineering test programme was used to record spectra of 260 stars between 2.36 and 4.05 μm at a resolution of 2000 and with high S/N. Goal of the programme was to observe a set of stars covering the entire MK spectral classification scheme to extend this classification scheme to the infrared. We present the programme, examples of the spectra and important issues for the calibration of the SWS data obtained after the liquid helium depletion.

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