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Table 3
Theoretical blue and red edges of the instability strip for RRLs in the (G,BP − RP) plane for pulsations in fundamental mode (RRab) and first overtone (RRc).
| Type | Blue edge | Red edge | Parameters |
|---|---|---|---|
| RRab | −17.02(BP − RP − 0.5) − 1.64 | −9.25(BP − RP − 0.5) + 2.00 | Z = 0.0003, M = 0.7 M⊙, Y = 0.220 |
| RRc | −11.24(BP − RP − 0.5) − 1.50 | −l5.65(BP − RP − 0.5) + 1.84 | Z = 0.0003, M = 0.7 M⊙, Y = 0.220 |
| RRab | −l4.45(BP − RP − 0.5) − 1.73 | −9.22(BP − RP − 0.5) + 1.72 | Z = 0.0003, M = 0.7 M⊙, Y = 0.245 |
| RRc | −14.24(BP − RP − 0.5) − 2.41 | −l4.02(BP − RP − 0.5) + 1.39 | Z = 0.0003, M = 0.7 M⊙, Y = 0.245 |
| RRab | −15.16(BP − RP − 0.5) − 1.78 | −9.42(BP − RP − 0.5) + 1.75 | Z = 0.0001, M = 0.7 M⊙, Y = 0.245 |
| RRc | −11.28(BP − RP − 0.5) − 1.76 | −l5.65(BP − RP − 0.5) + 1.46 | Z = 0.0001, M = 0.7 M⊙, Y = 0.245 |
| RRab | −11.3l(BP − RP − 0.5) − 1.40 | −9.33(BP − RP − 0.5) + 1.60 | Z = 0.0003, M = 0.7 M⊙, Y = 0.290 |
| RRc | −13.33(BP − RP − 0.5) − 2.53 | −l0.00(BP − RP − 0.5) + 0.87 | Z = 0.0003, M = 0.7 M⊙, Y = 0.290 |
| RRab | −l4.04(BP − RP − 0.5) − 2.13 | −8.l3(BP − RP − 0.5) + 1.21 | Z = 0.0003, M = 0.7 M⊙, Y = 0.357 |
| RRc | −24.6l(BP − RP − 0.5) − 5.66 | −l4.52(BP − RP − 0.5) + 0.57 | Z = 0.0003, M = 0.7 M⊙, Y = 0.357 |
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