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Table 3

Illustrative sample calculations of magnetic-field strength without and with fringe correction and with different selections of spectral lines and weights (line depths) used for the construction of the LSD Stokes V profile.

Spectrum Fringe B l σ(Bl) N LSD N l σ(Nl)
correction G G % G G

With all available lines with theoretical depths:
2003 #12 no 130 21 0.014 −13 19
2004 #1 no 77 25 0.017 1 22
2004 #2 no −110 34 0.022 −9 21
2003 #12 yes 95 19 0.013 −13 19
2004 #1 yes 95 24 0.016 1 22
2004 #2 yes −107 27 0.018 −9 21

With measured line depths and without all strong blends:
2003 #12 no 145 19 0.018 −22 16
2004 #1 no 83 22 0.022 −7 19
2004 #2 no −83 29 0.029 6 18
2003 #12 yes 71 17 0.017 −22 16
2004 #1 yes 100 21 0.021 −8 19
2004 #2 yes −84 23 0.023 6 18

Notes.Integration limits of vlimit = 54 km s-1 have been used. Symbols have the same meaning as in Table 2, from which the examples in the last three lines in the table below have been taken.

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