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Table 2

Derived LTE/NLTE abundances from Ca I and Ca II lines using the all-lines and the line-by-line methods for each star.

All-lines Line-by-Line


Visual IR


Ca I Ca II Ca I Ca II A(Ca I) σ A(Ca II) σ
Procyon 44 5 44 5
NLTE 6.19(9) 6.22(8) 6.22(4)* 6.20 0.10 6.24 0.11
LTE 6.21(10) 6.50(9) 6.21(4)* 6.24 0.11 6.49 0.10

Sun 55 10 13 3 68 13
NLTE 6.26(10) 6.24(6) 6.25(12) 6.20(10) 6.24 0.10 6.26 0.09
LTE 6.25(10) 6.32(12) 6.29(14) 6.44(8) 6.30 0.09 6.42 0.13

Arcturus 42 2 15 57 2
NLTE 6.02(21) 6.04(9) 6.11(15) 6.04(8)* 5.97 0.14 6.04
LTE 6.00(20) 6.38(16) 6.21(15) 6.05(8)* 6.00 0.13 6.38

Notes. In front of the names of the stars is the number of lines used. For the all-lines method, the values in parenthesis represent the error. Values with asterisks were obtained using only the wings of the Ca II IR triplet lines (see text). For the line-by-line method, σ represents the standard deviation of the quantity to the left.

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