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Home All issues Volume 499 / No 3 (June I 2009) A&A, 499 3 (2009) 943-954 Full HTML
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Table 3:

a) Chandra LETG observation (Liang & Zhao 2008b) for Procyon along with predictions (for the line emissivity $\epsilon $ and intensity I) at $T_{\rm e}=10^{6.1}$ K and $n_{\rm e}=1.6$ $\times $ 109 cm-3. For completeness, an observation for a solar active region is given in the column labelled ABB85 (Acton et al. 1985). The ``-'' tag in the $\lambda $-columns denotes those wavelengths corrected by experimental energies.
${\rm\lambda_{obs}}$ Flux $\lambda^a$ ${\rm\epsilon}^a$ $I_{\rm Procyon}^{a}$ $\lambda^b$ ${\rm\epsilon}^b$ $I_{\rm Procyon}^{b}$ Transition
Å ${\rm Procyon^{\star}}$ ${\rm ABB85^{\bigtriangleup}}$ Å ${\rm phot.~cm^3~s^{-1}}$   Å ${\rm phot.~cm^3~s^{-1}}$   Upper Low
47.42 0.55(0.06)c ... -47.489 5.476(-12)d 0.16 -47.489 4.098(-12) 0.12 ${\rm 2s 2p 3p }$ ${\rm ^2D_{3/2}}$ ${\rm\to ~2s^2 2p}$ ${\rm ^2P_{1/2}}$
    ... 47.545 6.058(-12) 0.22 -47.545 4.831(-12) 0.14 ${\rm 2s 2p 3p }$ ${\rm ^2D_{5/2}}$ ${\rm\to ~2s^2 2p}$ ${\rm ^2P_{3/2}}$
50.334 0.44(0.08) 195 -50.305 1.680(-12) 0.05 -50.305 4.055(-12) 0.04 ${\rm 2s 2p 3d }$ ${\rm ^4D_{5/2}}$ ${\rm\to ~2s 2p^2}$ ${\rm ^4P_{3/2}}$
      50.316 1.259(-12) 0.04 -50.316 1.824(-12) 0.06 ${\rm 2s 2p 3d }$ ${\rm ^2D_{5/2}}$ ${\rm\to ~2s 2p^2}$ ${\rm ^4P_{5/2}}$
      -50.333 1.021(-12) 0.03 -50.333 1.477(-12) 0.04 ${\rm 2s 2p 3d }$ ${\rm ^4D_{7/2}}$ ${\rm\to ~2s 2p^2}$ ${\rm ^4P_{5/2}}$
50.524 1.38(0.09) 12 -50.524 4.403(-11) 1.26 -50.524 3.902(-11) 1.14 ${\rm 2s^2 3d}$ ${\rm ^2D_{3/2}}$ ${\rm\to ~2s^2 2p}$ ${\rm ^2P_{1/2}}$
50.672 1.04(0.08) 74 -50.691 4.979(-11) 1.40 -50.691 4.734(-11) 1.37 ${\rm 2s^2 3d}$ ${\rm ^2D_{5/2}}$ ${\rm\to ~2s^2 2p}$ ${\rm ^2P_{3/2}}$
      -50.703 8.778(-12) 0.25 -50.703 7.769(-12) 0.23 ${\rm 2s^2 3d}$ ${\rm ^2D_{3/2}}$ ${\rm\to ~2s^2 2p}$ ${\rm ^2P_{3/2}}$
50.828 0.15(0.08) ... 51.047 1.224(-12) 0.04 50.829 1.812(-12) 0.06 ${\rm 2s 2p 3d }$ ${\rm ^4F_{7/2}}$ ${\rm\to ~2s 2p^2}$ ${\rm ^4P_{5/2}}$
      51.047 3.142(-13) 0.01 50.830 4.352(-13) 0.01 ${\rm 2s 2p 3d }$ ${\rm ^4F_{3/2}}$ ${\rm\to ~2s 2p^2}$ ${\rm ^4P_{3/2}}$
52.453 0.29(0.07) 15 -52.485 8.715(-12) 0.25 -52.485 7.279(-12) 0.21 ${\rm 2s 2p 3d }$ ${\rm ^2F_{7/2}}$ ${\rm\to ~2s 2p^2}$ ${\rm ^2D_{5/2}}$
52.594 0.30(0.07) 40 -52.611 1.001(-11) 0.29 -52.611 7.926(-12) 0.26 ${\rm 2s 2p 3d }$ ${\rm ^2F_{5/2}}$ ${\rm\to ~2s 2p^2}$ ${\rm ^2D_{3/2}}$
54.533 0.62(0.12) <10 -54.521 1.564(-12) 0.04 -54.522 1.241(-12) 0.03 ${\rm 2s 2p 3s }$ ${\rm ^4P_{3/2}}$ ${\rm\to ~2s 2p^2}$ ${\rm ^4P_{1/2}}$
      -54.522 2.680(-13) 0.01 -54.522 1.302(-12) 0.04 ${\rm 2s 2p 3d }$ ${\rm ^2P_{1/2}}$ ${\rm\to ~2s 2p^2}$ ${\rm ^2S_{1/2}}$
      -54.598 4.731(-12) 0.14 -54.599 3.947(-12) 0.12 ${\rm 2s 2p 3d }$ ${\rm ^2P_{3/2}}$ ${\rm\to ~2s 2p^2}$ ${\rm ^2S_{1/2}}$
54.895 0.52(0.12) <10 55.238 9.561(-13) 0.03 54.955 3.892(-12) 0.11 ${\rm 2s^2 3s}$ ${\rm ^2S_{1/2}}$ ${\rm\to ~2s^2 2p}$ ${\rm ^2P_{1/2}}$
55.078 0.67(0.07) 17 55.453 1.945(-12) 0.06 55.167 8.218(-12) 0.22 ${\rm 2s^2 3s}$ ${\rm ^2S_{1/2}}$ ${\rm\to ~2s^2 2p}$ ${\rm ^2P_{3/2}}$
57.196 0.25(0.07) 25 -57.209 1.427(-11) 0.40 -57.209 1.386(-11) 0.43 ${\rm 2s 2p 3s }$ ${\rm ^2P_{3/2}}$ ${\rm\to ~2s 2p^2}$ ${\rm ^2D_{5/2}}$
57.309 0.35(0.08) 17 -57.365 1.536(-11) 0.43 -57.365 1.459(-11) 0.40 ${\rm 2s 2p 3s }$ ${\rm ^2P_{1/2}}$ ${\rm\to ~2s 2p^2}$ ${\rm ^2D_{3/2}}$
61.971 1.11(0.14) 32 62.282 1.223(-11) 0.32 61.925 1.515(-11) 0.46 ${\rm 2s^2 3p}$ ${\rm ^2P_{3/2}}$ ${\rm\to ~2s 2p^2}$ ${\rm ^2D_{5/2,3/2}}$
      62.358 8.668(-12) 0.24 61.992 1.106(-11) 0.31 ${\rm 2s^2 3p}$ ${\rm ^2P_{1/2}}$ ${\rm\to ~2s 2p^2}$ ${\rm ^2D_{3/2}}$
$\star$ Units = 10-4 photons cm-2 s-1; $\bigtriangleup$ units = photons cm-2 s-1 arcsec-1; a obtained using the R-matrix data of Keenan et al. (2000) for n=2 and the DW data of Zhang & Sampson (1994) for n=3; b obtained using the present ICFT R-matrix excitation data; c (m) denotes $\pm$m; d (n) denotes $\times10^n$.

 

Table 3: b) Line intensity ratios relative to that of 50.524 Å in the soft X-ray wavelength range. The caption and footnotes are the same as in Table 3a.
${\rm\lambda_{obs}}$ Ratio $\lambda^a$ $I/I_{\rm ref}^{a}$ $\lambda^b$ $I/I_{\rm ref}^{b}$ Transition
${\mbox \AA}$ ${\rm Procyon^{\star}}$ ${\rm ABB85^{\bigtriangleup}}$ ${\mbox \AA}$   ${\mbox \AA}$   Upper Low
47.42 0.40(0.05)c ... -47.489 0.12 -47.489 0.11 ${\rm 2s 2p 3p }$ ${\rm ^2D_{3/2}}$ ${\rm\to ~2s^2 2p}$ ${\rm ^2P_{1/2}}$
    ... 47.545 0.14 -47.545 0.12 ${\rm 2s 2p 3p }$ ${\rm ^2D_{5/2}}$ ${\rm\to ~2s^2 2p}$ ${\rm ^2P_{3/2}}$
50.334 0.32(0.06) 16.25 -50.305 0.04 -50.305 0.10 ${\rm 2s 2p 3d }$ ${\rm ^4D_{5/2}}$ ${\rm\to ~2s 2p^2}$ ${\rm ^4P_{3/2}}$
      50.316 0.03 -50.316 0.05 ${\rm 2s 2p 3d }$ ${\rm ^2D_{5/2}}$ ${\rm\to ~2s 2p^2}$ ${\rm ^4P_{5/2}}$
      -50.333 0.02 -50.333 0.04 ${\rm 2s 2p 3d }$ ${\rm ^4D_{7/2}}$ ${\rm\to ~2s 2p^2}$ ${\rm ^4P_{5/2}}$
50.524 1.00(0.09) 1.00 -50.524 1.00 -50.524 1.00 ${\rm 2s^2 3d}$ ${\rm ^2D_{3/2}}$ ${\rm\to ~2s^2 2p}$ ${\rm ^2P_{1/2}}$
50.672 0.75(0.08) 6.17 -50.691 1.13 -50.691 1.21 ${\rm 2s^2 3d}$ ${\rm ^2D_{5/2}}$ ${\rm\to ~2s^2 2p}$ ${\rm ^2P_{3/2}}$
      -50.703 0.20 -50.703 0.20 ${\rm 2s^2 3d}$ ${\rm ^2D_{3/2}}$ ${\rm\to ~2s^2 2p}$ ${\rm ^2P_{3/2}}$
50.828 0.11(0.06) ... 51.047 0.03 50.829 0.05 ${\rm 2s 2p 3d }$ ${\rm ^4F_{7/2}}$ ${\rm\to ~2s 2p^2}$ ${\rm ^4P_{5/2}}$
      51.047 0.01 50.830 0.01 ${\rm 2s 2p 3d }$ ${\rm ^4F_{3/2}}$ ${\rm\to ~2s 2p^2}$ ${\rm ^4P_{3/2}}$
52.453 0.21(0.05) 1.25 -52.485 0.20 -52.485 0.19 ${\rm 2s 2p 3d }$ ${\rm ^2F_{7/2}}$ ${\rm\to ~2s 2p^2}$ ${\rm ^2D_{5/2}}$
52.594 0.22(0.05) 3.33 -52.611 0.23 -52.611 0.20 ${\rm 2s 2p 3d }$ ${\rm ^2F_{5/2}}$ ${\rm\to ~2s 2p^2}$ ${\rm ^2D_{3/2}}$
54.533 0.45(0.09) <1.00 -54.521 0.04 -54.522 0.03 ${\rm 2s 2p 3s }$ ${\rm ^4P_{3/2}}$ ${\rm\to ~2s 2p^2}$ ${\rm ^4P_{1/2}}$
      -54.522 0.01 -54.522 0.03 ${\rm 2s 2p 3d }$ ${\rm ^2P_{1/2}}$ ${\rm\to ~2s 2p^2}$ ${\rm ^2S_{1/2}}$
      -54.598 0.11 -54.599 0.10 ${\rm 2s 2p 3d }$ ${\rm ^2P_{3/2}}$ ${\rm\to ~2s 2p^2}$ ${\rm ^2S_{1/2}}$
54.895 0.38(0.09) <1.00 55.238 0.02 54.955 0.10 ${\rm 2s^2 3s}$ ${\rm ^2S_{1/2}}$ ${\rm\to ~2s^2 2p}$ ${\rm ^2P_{1/2}}$
55.078 0.49(0.06) 1.42 55.453 0.04 55.167 0.21 ${\rm 2s^2 3s}$ ${\rm ^2S_{1/2}}$ ${\rm\to ~2s^2 2p}$ ${\rm ^2P_{3/2}}$
57.196 0.18(0.05) 2.08 -57.209 0.32 -57.209 0.36 ${\rm 2s 2p 3s }$ ${\rm ^2P_{3/2}}$ ${\rm\to ~2s 2p^2}$ ${\rm ^2D_{5/2}}$
57.309 0.25(0.06) 1.42 -57.365 0.35 -57.365 0.37 ${\rm 2s 2p 3s }$ ${\rm ^2P_{1/2}}$ ${\rm\to ~2s 2p^2}$ ${\rm ^2D_{3/2}}$
61.971 0.80(0.11) 2.67 62.282 0.28 61.925 0.39 ${\rm 2s^2 3p}$ ${\rm ^2P_{3/2}}$ ${\rm\to ~2s 2p^2}$ ${\rm ^2D_{5/2,3/2}}$
      62.358 0.20 61.992 0.28 ${\rm 2s^2 3p}$ ${\rm ^2P_{1/2}}$ ${\rm\to ~2s 2p^2}$ ${\rm ^2D_{3/2}}$

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