10 papers
Final Calibration of the Berkeley Extreme and Far-Ultraviolet Spectrometer on the ORFEUS-SPAS I and II Missions
W. V. Dixon, J. Dupuis, M. Hurwitz
The Berkeley Extreme and Far-Ultraviolet Spectrometer (BEFS) flew as part of the ORFEUS telescope on the ORFEUS-SPAS I and II space-shuttle missions in 1993 and 1996, respectively.…
GHRS and ORFEUS-II Observations of the Highly Ionized Interstellar Medium Toward ESO141-055
Kenneth R. Sembach, Blair D. Savage, Mark Hurwitz
We present Goddard High Resolution Spectrograph and ORFEUS-II measurements of Si IV, CIV, N V, and O VI absorption in the interstellar medium of the Galactic disk and halo toward t…
Far-Ultraviolet Performance of the Berkeley Spectrograph During the ORFEUS-SPAS II Mission
Mark Hurwitz, Stuart Bowyer, Robert Bristol +6
The Berkeley spectrograph aboard the ORFEUS telescope made its second flight on the 14-day ORFEUS-SPAS II mission of the Space Shuttle Columbia in November/December 1996. Approxima…
ORFEUS-II Far-Ultraviolet Observations of 3C273: 1. Interstellar and Intergalactic Absorption Lines
Mark Hurwitz, Immo Appenzeller, Juergen Barnstedt +7
We present the first intermediate-resolution (lambda / 3000) spectrum of the bright quasi-stellar object 3C273 at wavelengths between 900 and 1200 A. Observations were performed wi…
Far Ultraviolet Fluorescence of Molecular Hydrogen in IC 63
Mark Hurwitz
We present observations of H_2 fluorescence at wavelengths between 1000 and 1200 A from the bright reflection nebula IC 63. Observations were performed with the Berkeley spectrogra…
ORFEUS-II Observations of the Ultraviolet-Bright Star Barnard 29 in M13
W. Van Dyke Dixon, Mark Hurwitz
The UV-bright star Barnard 29 in the globular cluster M13 was observed for 5300 seconds with the Berkeley spectrometer on the ORFEUS-SPAS II Mission in 1996 November-December. The…