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Table 4.
Near-infrared PLRs and PWRs of RRLs in NGC 6441.
| Band | Type | aλ | bλ | σ | N |
|---|---|---|---|---|---|
| J | RRab | 14.960 ± 0.029 | −1.987 ± 0.252 | 0.065 | 22 |
| J | RRc | 14.540 ± 0.087 | −2.270 ± 0.228 | 0.076 | 9 |
| J | All | 14.982 ± 0.019 | −1.777 ± 0.100 | 0.054 | 27 |
| H | RRab | 14.687 ± 0.026 | −2.171 ± 0.221 | 0.059 | 21 |
| H | RRc | 14.236 ± 0.083 | −2.629 ± 0.212 | 0.068 | 9 |
| H | All | 14.672 ± 0.020 | −2.290 ± 0.107 | 0.060 | 29 |
| Ks | RRab | 14.609 ± 0.021 | −2.418 ± 0.184 | 0.046 | 18 |
| Ks | RRc | 14.139 ± 0.059 | −2.770 ± 0.152 | 0.050 | 9 |
| Ks | All | 14.604 ± 0.014 | −2.438 ± 0.074 | 0.040 | 25 |
| WJ, H | RRab | 14.188 ± 0.032 | −2.709 ± 0.284 | 0.078 | 22 |
| WJ, H | RRc | 13.713 ± 0.110 | −3.257 ± 0.289 | 0.092 | 9 |
| WJ, H | All | 14.158 ± 0.023 | −3.130 ± 0.132 | 0.072 | 29 |
| WH, Ks | RRab | 14.459 ± 0.038 | −2.567 ± 0.327 | 0.079 | 15 |
| WH, Ks | RRc | 13.722 ± 0.186 | −3.567 ± 0.464 | 0.133 | 8 |
| WH, Ks | All | 14.457 ± 0.033 | −2.713 ± 0.166 | 0.087 | 22 |
| WJ, Ks | RRab | 14.327 ± 0.034 | −2.886 ± 0.292 | 0.070 | 17 |
| WJ, Ks | RRc | 13.866 ± 0.119 | −3.108 ± 0.307 | 0.099 | 9 |
| WJ, Ks | All | 14.317 ± 0.028 | −2.922 ± 0.147 | 0.079 | 26 |
Notes. The zero-point (a), slope (b), dispersion (σ) and the number of stars (N) in the final PLR fits are tabulated.
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