Publication | Closed Access
The potential for plasma diagnostics from stellar extreme-ultraviolet observations
291
Citations
0
References
1992
Year
EUV spectral lines from the most abundant ions between 50–500 Å provide diagnostic information for stellar plasmas. The study aims to describe these diagnostic EUV lines and to introduce an objective grating spectrometer for high‑resolution stellar observations. The spectrometer, based on the Skylab slitless design, uses an objective grating to achieve high spectral resolution in the EUV. The lines cover temperatures of 10^5–10^7 K and allow determination of temperature, density, and abundances, while the instrument can reach efficiencies rivaling larger telescopes over limited wavelength ranges. Published in The Astrophysical Journal Supplement Series (July 1992, DOI 10.1086/191698).
view Abstract Citations (271) References (29) Co-Reads Similar Papers Volume Content Graphics Metrics Export Citation NASA/ADS The Potential for Plasma Diagnostics from Stellar Extreme-Ultraviolet Observations Feldman, U. ; Mandelbaum, P. ; Seely, J. F. ; Doschek, G. A. ; Gursky, H. Abstract A description of the lines from the most abundant ions in the EUV spectrum in the range 50-500 A that have special diagnostic significance is presented. These lines are from plasmas in the temperature range from 10 exp 5 to 10 exp 7 K. Their utility for determining temperature, density, and abundances is demonstrated. An objective grating spectrometer, based on the Skylab slitless spectrograph, for making celestial observations in the EUV spectral region with high spectral resolution is also described. Such an instrument, if equipped with a multilayer grating, can achieve efficiencies over limited EUV wavelength ranges that rival much larger telescope-spectrometer instruments for the observation of stars and other celestial objects. Publication: The Astrophysical Journal Supplement Series Pub Date: July 1992 DOI: 10.1086/191698 Bibcode: 1992ApJS...81..387F Keywords: Chromosphere; Extreme Ultraviolet Radiation; Solar Corona; Solar Radiation; Solar Wind; Skylab Program; Solar Spectra; Spectrographs; Astrophysics; INSTRUMENTATION: SPECTROGRAPHS; ULTRAVIOLET: SOLAR SYSTEM full text sources ADS |