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Astron. Astrophys. 359, 1111-1116 (2000)

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2. Observations

The observations have been carried out during the second mission of ORFEUS on the ASTRO-SPAS space shuttle mission in Nov./Dec. 1996. ORFEUS is equipped with two alternatively operating spectrometers, the echelle spectrometer (Krämer et al. 1990) and the Berkely spectrometer (Hurwitz & Bowyer 1996). The spectroscopic data presented here were obtained with the Heidelberg/Tübingen echelle spectrometer. This instrument has a resolution of somewhat better than [FORMULA] (Barnstedt et al. 1999), working in the spectral range between 912 and 1410 Å. A detailed description of the instrument is given by Barnstedt et al. (1999).

Here we study the ORFEUS spectra of 4 LMC stars and one SMC star. Basic information about the targets is given in Table 1. The primary data reduction was performed by the ORFEUS team in Tübingen (Barnstedt et al. 1999). In order to improve signal-to-noise ratios (S/N), all spectra have been filtered by a wavelet algorithm (Fligge & Solanki 1997). The resolution after filtering is [FORMULA] km s-1. Heliocentric velocities have been transformed for each line of sight into the LSR (Local Standard of Rest) system.


Table 1. Basic properties of Magellanic Cloud targets.
1) References:
(1) Parker et al. (1992); (2) Sembach & Savage (1992); (3) Fitzpatrick & Savage (1983); (4) Chu et al. (1994); (5) Wilcots et al. (1996); (6) Vacca & Torres-Dodgen (1990); (7) de Boer & Nash (1982) and references therein

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© European Southern Observatory (ESO) 2000

Online publication: July 13, 2000