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Table 1.
Observed and modelled colour differences between P1 and P2 stars.
| Colour | ⟨Δ(P2−P1)⟩obs | CCNO | CHe | CZ | Δ(P2−P1)fit | ||
|---|---|---|---|---|---|---|---|
| CNO, He | CNO, Z | CNO, He, Z | |||||
| (mag) | (mag) | (mag) | (mag) | ||||
| ΔF336W−F343N | −0.070 | −0.093 | −0.010 | +0.003 | −0.081 | −0.087 | −0.071 |
| ΔF343N−F438W | +0.113 | +0.150 | −0.032 | +0.019 | +0.114 | +0.114 | +0.112 |
| ΔF336W−F438W | +0.045 | +0.056 | −0.043 | +0.022 | +0.032 | +0.026 | +0.039 |
| ΔF336W−F555W | +0.013 | +0.042 | −0.075 | +0.029 | +0.009 | +0.006 | +0.017 |
| ΔF336W−F814W | −0.001 | +0.042 | −0.105 | +0.032 | −0.001 | +0.003 | +0.001 |
| ΔF438W−F555W | −0.026 | −0.017 | −0.039 | +0.009 | −0.027 | −0.025 | −0.027 |
| ΔF438W−F814W | −0.044 | −0.017 | −0.075 | +0.013 | −0.040 | −0.029 | −0.045 |
| ΔF438W−F850LP | −0.048 | −0.017 | −0.081 | +0.013 | −0.042 | −0.029 | −0.049 |
| ΔF555W−F814W | −0.019 | +0.000 | −0.038 | +0.004 | −0.013 | −0.004 | −0.020 |
Notes. The last three columns give the fitted colour differences Δ(P2−P1)fit when allowing for variations in CNO+He, CNO+Z, and CNO+He+Z, respectively.
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