Table 10
Na abundance spread, critical value of the Na abundance distinguishing 1P and 2P stars, and the corresponding fraction of Na-rich 2P stars f2P (together with the associated errors based on Beta distribution) in the RGB and AGB samples.
| NGC 6809 | NGC 6121 | NGC 2808 | NGC 104 | NGC 6752 | NGC 6205 | NGC 5986 | NGC 5904 | NGC 6266 | |
| M 55 | M 4 | 47 Tuc | M 13 | M 5 | M 62 | ||||
|
|
|||||||||
| [Na/H]cri | –1.70 | –0.97 | –1.05 | –0.50 | –1.65 | –1.50 | –1.46 | –1.35 | –1.05 |
|
|
|||||||||
| Δ[Na/H]AGB | 0.48 | 0.53 | 0.54 | 0.70 | 0.36 | 0.62 | 0.61 | 0.51 | 0.30 |
| f2P,AGB | 65±11 | 53±11 | 55±9 | 40±8 | 15±11 | 87±13 | 57±18 | 67±13 | 0±23 |
|
|
|||||||||
| Δ[Na/H]RGB | 0.70 | 0.75 | 0.75 | 0.57 | 0.91 | 1.12 | 0.76 | 0.68 | 1.08 |
| f 2P,RGB | 66±6 | 76±6 | 52±8 | 67± 10 | 75±11 | 76±5 | 72±12 | 69±9 | 62±14 |
|
|
|||||||||
| [Fe/H] | –1.86 | –1.14 | –1.11 | –0.82 | –1.60 | –1.57 | –1.54 | –1.22 | –1.05 |
| Age | 13.00 | 11.50 | 11.00 | 11.75 | 12.50 | 12.00 | 12.25 | 11.50 | 11.60 |
| ±0.25 | ±0.38 | ±0.38 | ±0.25 | ±0.25 | ±0.38 | ±0.75 | ±0.25 | ±0.60 | |
| M V | –7.57 | –7.19 | –9.39 | –9.42 | –7.73 | –8.55 | –8.44 | –8.81 | –9.18 |
| mass | 0.269 | 0.195 | 1.420 | 1.500 | 0.317 | 0.775 | 0.599 | 0.857 | 1.220 |
| HBR | 0.87 | –0.06 | –0.49 | –0.99 | 1.00 | 0.97 | 0.97 | 0.31 | 0.32 |
| r h | 4.46 | 2.34 | 2.12 | 3.65 | 2.72 | 3.34 | 3.18 | 4.60 | 2.47 |
| r t | 25.10 | 20.79 | 43.42 | 56.10 | 64.39 | 56.40 | 31.83 | 61.96 | 18.00 |
| ellipticity | 0.02 | 0.00 | 0.12 | 0.09 | 0.04 | 0.11 | 0.06 | 0.14 | 0.01 |
| c.c. | 0.93 | 1.65 | 1.56 | 2.07 | 2.50 | 1.53 | 1.23 | 1.73 | 1.71 |
| σ v | 4.0 | 4.0 | 13.4 | 11.0 | 4.9 | 7.1 | − | 5.5 | 14.3 |
Notes. The five GCs on the left side of the vertical line are the GCs analyzed (or re-analyzed) by ourselves homogeneously, and their [Fe/H] are the values derived by us, while the four GCs on the right are collected from the literature (see the text). The other global GC properties are from the literature. The GC ages (Gyr) are adopted from VandenBerg et al. (2013), except NGC 6266 whose age is from Roediger et al. (2014); the MV (mag), ellipticities, c.c., and σv (km s-1) are from Harris (1996, 2010 version); the masses (× 106M⊙) are adopted from Boyles et al. (2011); the HBR, rh (pc), and rt (pc) are from Mackey & van den Bergh (2005).
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