Element | ZNG 4 | M 13/ J11 (BHB)* | M 13/WF4-3485(BHB)* | M 13/ L262 (RGB)* | Mean |
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RGB abundances* | |
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in M 13 | |
log g= 2.5 | log g= 3.1 | log g= 4.1 | log g= 0.50 | ||
[X/H] | [X/H] | [X/H] | [X/H] | [X/H] | |
He | -0.55 | <-0.26 | -1.49 ![]() |
... | ... |
Na | -1.28 | ... | ... | -1.27 ![]() |
-1.37 ![]() |
Mg | -1.51 | -1.50 ![]() |
-1.62 ![]() |
-1.51 ![]() |
-1.46 ![]() |
Si | -1.10 | <-1.23 | -1.43 ![]() |
-1.16 ![]() |
-1.30 ![]() |
Ca | -0.64 | -1.72 ![]() |
-1.66 ![]() |
-1.39 ![]() |
-1.34 ![]() |
Sc | -0.99 | -1.63 ![]() |
<+1.10 | ... | -1.67 ![]() |
Ti | -0.75 | -1.32 ![]() |
-0.53 ![]() |
-1.30 ![]() |
-1.32 ![]() |
Cr | -1.41 | -1.71 ![]() |
<-0.12 | ... | ... |
Fe | -1.49 | -1.82 ![]() |
+0.02 ![]() |
-1.61 ![]() |
-1.60 ![]() |
Sr | -2.19 | -2.03 ![]() |
<+1.75 | ... | ... |
Y | -1.20 | <-0.97 | <+2.92 | ... | -1.61 ![]() |
Ba | -1.21 | -1.68 ![]() |
<+3.26 | ... | -1.53 ![]() |
* Abundances of M 13 BHB stars are from Behr (2000c) and abundances of M 13 RGB star are from Cavallo & Nagar (2000). In the last column, the mean abundances of elements from Na to Fe in M 13 RGB stars are from Kraft et al. (1997) and that of Y and Ba are from Armosky et al. (1994). |