2000/04/01 by J. Barnstedt, Jürgen Barnstedt, W. Gringel +2 · 10 citations
Physics and Astronomy · #Absorption spectroscopy #Astronomy #Astronomy and Astrophysical Research #Astrophysics #Astrophysics and Star Formation Studies #Galaxy #Hydrogen #Hydrogen molecule #Interstellar medium #Optics #Physics #Spectral line #Spectrometer #Stellar, planetary, and galactic studies #Table (database) #Telescope #astro-ph
paper · pdf · doi:10.1051/aas:2000176
published in Astronomy & Astrophysics Supplement Series 143(2), 193-210 (EDP Sciences) · 18 pages, 33 figures
openalex publication_date 2000/04/01 · arxiv created 2000/06/21 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
During the second flight of the ORFEUS-SPAS mission in November/December 1996, the Echelle spectrometer was used extensively by the Principal and Guest Investigator teams as one of the two focal plane instruments of the ORFEUS telescope. The spectrum of HD 93521 was obtained during this mission with a total integration time of 1740 s. This spectrum shows numerous sharp interstellar absorption lines. We identified 198 lines of molecular hydrogen including at least 7 lines with a high velocity component. Also most of the 67 identified interstellar metal lines are visible with a high velocity component. We present plots of the complete ORFEUS II Echelle spectrum together with tables of all identified interstellar absorption lines including all 14 detectable H I lines. In addition several identified stellar lines, partially with narrow absorption components, and stellar wind lines are given in a separate table.