High-resolution spectra of the active binary Capella (G8 III + G1 III) covering the energy range of 0.4-8.0 keV (1.5-30 Å) show a large number of emission lines, demonstrating the performance of the High-Energy Transmission Grating Spectrometer. A preliminary application of plasma diagnostics provides information on coronal temperatures and densities. Lines arising from different elements in a range of ionization states indicate that Capella has plasma with a broad range of temperatures, from logT=6.3 to 7.2, generally consistent with recent results from observations with the Extreme-Ultraviolet Explorer and the Advanced Satellite for Cosmology and Astrophysics. The electron density
CITATION STYLE
Canizares, C. R., Huenemoerder, D. P., Davis, D. S., Dewey, D., Flanagan, K. A., Houck, J., … Brickhouse, N. S. (2000). High-Resolution X-Ray Spectra of Capella: Initial Results from the [ITAL]Chandra[/ITAL] High-Energy Transmission Grating Spectrometer. The Astrophysical Journal, 539(1), L41–L44. https://doi.org/10.1086/312823
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