On the correlation between Ca and H solar emission and consequences for stellar activity observations

N. Meunier; X. Delfosse

doi:10.1051/0004-6361/200911823

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Volume 501 / No 3 (July III 2009)

A&A, 501 3 (2009) 1103-1112

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Table 2:

Filament contrasts for which the correlation is equal to zero.
Contrast	Fit	Literature
$C_{\rm Ca}$	0.20	0.70
$C_{\rm H\alpha }$	0.13	0.35
$C_{\rm fil}$	0.30	0.20
$C_{\rm fil}$ (corr = 0)	1.16	3.08
$C_{\rm fil}$ (corr = 0)/ $C_{\rm fil}$	3.9	15.4

Note 2. Given the fitted contrasts for the three types of structures or those found in the literature, a filament contrast for which the correlation is equal to zero is given, in absolute value and relative to the solar value (see Sect. 4 for details).

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