1998/08/24 by H. Widmann, Widmann, H., K. S. de Boer +19
Engineering · Physics and Astronomy · #Astronomical Observations and Instrumentation #Astronomy and Astrophysical Research #Astrophysics (astro-ph) #Astrophysics and Star Formation Studies #FOS: Physical sciences #Stellar, planetary, and galactic studies #astro-ph
paper · pdf · doi:10.48550/arxiv.astro-ph/9808255
Astronomy & Astrophysics, Letter, in press
arxiv created 1998/08/24 · openalex publication_date 1998/08/24 · arxiv updated 2009/12/01 · openalex created_date 2019/06/27 · openalex updated_date 2026/07/28
FUV high resolution spectra of 18 stars, particularly chosen to observe the\ninterstellar medium (ISM), were obtained during the second ORFEUS-SPAS free\nflight space shuttle mission in December 1996. Among these were 6 objects with\na distance to the galactic plane larger than 1 kpc, one SMC and 4 LMC stars.\nThis selction of targets is part of the ORFEUS program to explore the galactic\nhalo. As the most important tracer of the hot gas we analyzed the stronger\ncomponent of the important O VI doublet in all our ISM spectra. We found an\naverage N(O VI) x sin |b| = 3.5 x 1014 /cm2 on the lines of sight to the 4\nLMC stars. Assuming an exponential distribution of O VI we calculated a\nmidplane density n(o) of 2.07 x 10-8 /cm3 and a scle height h(o) of 5.50 kpc.\n(Research supported in part by the DARA)\n