Dynamical measurements of hot gas in stellar systems

Details Dynamical measurements of hot gas in stellar systems Dynamical measurements of hot gas in stellar systems

Jul 2006

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006spie.6266e...5b&link_type=abstract

Space Telescopes and Instrumentation II: Ultraviolet to Gamma Ray. Edited by Turner, Martin J. L.; Hasinger, Günther. Proceedi

Computer Science

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Scientific paper

Since hot 100,000-1,000,000K gas in stars radiates predominantly at EUV and soft X-ray wavelengths, observations in these bands provide important diagnostics of the physical conditions in hot photospheres, stellar coronae and stellar winds. However, such studies are only able to examine the bulk of material, without being able to separate out the several gas components present. Radial velocity diagnostics have been used frequently in the UV and visible bands to distinguish different emission or absorption components in stellar spectra. Now, developments in grating and instrument technology provide a first opportunity to extend this technique into the EUV. Based on capabilities of the improved JPEX spectrometer (reported elsewhere in this volume), this paper reports on the key science that might be carried out with such an instrument; both as a sounding rocket payload and longer duration mission.

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