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Table 9
The period-luminosity relations based on the combined samples of Milky Way, LMC and SMC Cepheids in the form M = a(log (P) − 1.0) + b.
| Band | a | b | Std.dev. | γ |
| (mag dex-1) | (mag) | (mag) | (mag dex-1) | |
|
|
||||
| MV | −2.73 ± 0.07 | −3.97 ± 0.03 | 0.26 | + 0.09 |
| MI | −2.91 ± 0.07 | −4.75 ± 0.02 | 0.23 | −0.06 |
| WVI | −3.32 ± 0.08 | −5.92 ± 0.03 | 0.26 | −0.23 |
| MJ | −3.19 ± 0.06 | −5.20 ± 0.02 | 0.22 | −0.10 |
| MK | −3.30 ± 0.06 | −5.65 ± 0.02 | 0.22 | −0.11 |
| WJK | −3.38 ± 0.06 | −5.96 ± 0.02 | 0.23 | −0.10 |
Notes. The metallicity effect, γ, on the zero point determined in Paper II is given in the last column. The estimated uncertainty on the γ value is estimated to be 0.10 mag dex-1 in Paper II.
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