Determinations of temperature and density for solar-like Stars using Si XI soft X-ray emission lines

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dc.creatorLiang, G. Y.
dc.creatorZhao, G.
dc.date2006-06-13
dc.date.accessioned2026-07-07T11:25:42Z
dc.date.available2026-07-07T11:25:42Z
dc.descriptionWe study temperature and density sensitivities of ratios of Si XI soft X-ray emission lines, in the wavelength range of 43--54Å. The typical temperature of the formation of the analyzed lines is around 1.6~MK, which makes this analysis complementary to the analysis of He-like triplets being sensitive to hotter plasma. We present theoretical calculations and compare them with ratios obtained from high-resolution X-ray spectra of five solar-like stars: Procyon, $α$ Cen A$&$B, $ε$ Eri, and Capella. We find that our results are in good agreement with results obtained by other authors through different diagnostics, namely the analysis of density- and temperature-sensitive He-like triplet lines. We further estimate the coronal pressure and filling factors from Si~XI lines in this study.
dc.description21 pages, 6 figures, Accepted in AJ
dc.identifierhttps://arxiv.org/abs/astro-ph/0606289
dc.identifierhttp://arxiv.org/abs/astro-ph/0606289
dc.identifierAstron.J.132:1547-1554,2006
dc.identifierdoi:10.1086/506615
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/195590
dc.subjectAstrophysics
dc.titleDeterminations of temperature and density for solar-like Stars using Si XI soft X-ray emission lines
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