Figure 7.
![Top: examples of the method used to determine the colour and magnitude for RC and turn-off for solar metallicity parsec isochrones of age $\log [t({\rm yr})]=8.3$ (left), 9.1 (middle), and 9.5 (right). Bottom-left panel: CMD of all isochrones used, where the red region corresponds to MS stars (label = 1) and the blue region corresponds to the beginning of the RC phase (label = 4, 5, and 6). Bottom-right panel: RC and turn-off positions identified from the models, where the colour bar indicates the ages.](https://oup.silverchair-cdn.com/oup/backfile/Content_public/Journal/mnras/539/1/10.1093_mnras_staf509/1/staf509fig7.jpeg?Expires=1749663745&Signature=Qv-fnTSiUExp4fC8-Nyo8zlleLQaiLk5ltLZplO6O~UGMsusWqFcPRaAtAv1L2ve7D9krzyAX8dK0q4pbBqFTSoy46tEtTmVCrmc2oQLViDVGYag1uNjGjbzYq0HnNumBJGW1dlyesjXrlKxS0KleW2nEC0KFr7Ax3vXp4qUW2pWQM0axCmDXMN~wpQv6Ah6BSnXSS6SWSJ7rRS2RCVGsEAXSqs32gkiaXzhuoGORXbYiemfXundDy-XcuviUFt0OTWHzyK2RB9ZYuPYM3mQp6AzOnpfelQqobRXMHinBQSpa3mo1qUZEb8tCLhN9YeDkMjSbmv6tKivvh5XIbOMqA__&Key-Pair-Id=APKAIE5G5CRDK6RD3PGA)
Top: examples of the method used to determine the colour and magnitude for RC and turn-off for solar metallicity parsec isochrones of age |$\log [t({\rm yr})]=8.3$| (left), 9.1 (middle), and 9.5 (right). Bottom-left panel: CMD of all isochrones used, where the red region corresponds to MS stars (label = 1) and the blue region corresponds to the beginning of the RC phase (label = 4, 5, and 6). Bottom-right panel: RC and turn-off positions identified from the models, where the colour bar indicates the ages.
