Basic Parameters for NGC 6397

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NGC6397: Basic Parameters

[Fe/H] -2.0 Gratton et al, 2003, A&A, 408, 529
Age 13.9 Gyr Gratton et al, 2003, A&A, 408, 529
Distance 8970ly Reid and Gizis, AJ, 116, 2929
log(M/MSun) ? ?
V_HB 13.1 Gratton et al, 2003, A&A, 408, 529
V_RGBtip 10 Kaluzny, 1997, A&A Suppl, 121, 1
V_turnoff 16.6 Gratton et al, 2003, A&A, 408, 529
m-M 12.2-12.6 the Harris database
HB Very blue, short de Boer et al, 1995, A&A, 303, 95
Concentration
Parameter
2.50 the Harris database