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Table 5
Parameters used to simulate synthetic spectra of MSa and MSbc stars and estimation of helium difference between the two population for different ICUT in the case of NGC 6752.
| I CUT | T EFF,MSa | T EFF,MSbc | log gMSa | log gMSbc | ΔY |
|
|
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| 18.55 | 5410 | 5456 | 4.65 | 4.65 | 0.021 |
| 18.75 | 5254 | 5306 | 4.67 | 4.67 | 0.023 |
| 18.95 | 5100 | 5150 | 4.69 | 4.69 | 0.023 |
| 19.15 | 4946 | 4998 | 4.70 | 4.70 | 0.025 |
| 19.35 | 4798 | 4851 | 4.72 | 4.72 | 0.026 |
|
|
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| Average | 0.024, σ = 0.006 | ||||
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