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Home All issues Volume 507 / No 2 (November IV 2009) A&A, 507 2 (2009) 939-948 Full HTML
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Table 4:

Line ratios sensitive to optical depth.
Star $N_{\rm H}~({\rm cm^{-2}})$ $\frac{O {\sc vii}(r)}{O {\sc vii}(18.6)}$ $\frac{O {\sc viii}(Ly\alpha)}{O {\sc viii}(Ly\beta)}$ $\frac{Fe {\sc xvii}(15.0)}{Fe {\sc xvii}(16.8)}$
MP Mus $5\times10^{20}$ $4.0\pm1.5$ $3.2\pm1.0$ $1.3\pm0.4$
TW Hya $2\times10^{20}$ $9.4\pm2.8$ $7.0\pm2.6$ $1.9\pm1.1$
TWA 5 $3\times10^{20}$ $8\pm4$ $11\pm4$ $1.4\pm0.4$
Procyon $1.1\times10^{18}$ $7.9\pm1.1$ $\cdots$ $1.2\pm0.4$
AT Mic $1\times10^{18}$ $6.2\pm2.6$ $\cdots$ $1.8\pm0.6$
$\delta$ CrB $\cdots$ $\cdots$ $\cdots$ $2.4\pm0.4$
YZ CMi $1.2\times10^{18}$ $\cdots$ $\cdots$ $1.2\pm0.4$
44 Boo $1\times10^{18}$ $\cdots$ $\cdots$ $2.39\pm0.28$
$\alpha $ Cen $\cdots$ $9.7\pm1.0$ $\cdots$ $\cdots$
Capella $1.8\times10^{18}$ $\cdots$ $\cdots$ $1.64\pm0.12$
AB Dor $1.7\times10^{19}$ $8.9\pm1.6$ $\cdots$ $1.85\pm0.10$

Ratios are derived from line fluxes in ${\rm ph~s^{-1}~cm^{-2}}$. Active stellar measurements are taken from: Raassen et al. (2002) for Procyon; Raassen et al. (2003) for AT Mic; Gondoin (2005) for $\delta$ CrB; Raassen et al. (2007) for YZ CMi; Gondoin (2004) for 44 Boo; Audard et al. (2001) for Capella; Sanz-Forcada et al. (2003) for AB Dor.


Source LaTeX | All tables | In the text

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