Gaia Data Release 1
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Table 3

PL and PW relations for classical Cepheids with zero point based on TGAS parallaxes.

Relation rms
(mag)

PMV 95 objects (LSQ) −2.678log P−(1.00 ± 0.08) 0.74
PMV 102 objects (ABL) −2.678log P−(1.54 ± 0.10) 0.85
PMV 102 objects (BA) 1.31

PMI 95 objects (LSQ) −2.98log P−(1.28 ± 0.08) 0.78
PMI 102 objects (ABL) −2.98log P−(1.84 ± 0.10) 0.87
PMI 102 stars (BA) 1.33

PMKs 95 objects (LSQ) −3.365log P−(2.06 ± 0.08) 0.74
PMKs 102 objects (ABL) −3.365log P−(2.63 ± 0.10) 0.88
PMKS 102 stars (BA) 1.33

PW(V,VI) 95 objects (LSQ) −3.477log P−(2.21 ± 0.08) 0.77
PW(V,VI) 102 objects (ABL) −3.477log P−(2.82 ± 0.11) 0.90
PW(V,VI) 102 stars (BA) −3.477log P−(2.63 ± 0.13) 1.36

PW(Ks,VKs) 95 objects (LSQ) −3.32log P−(2.32 ± 0.08) 0.73
PW(Ks,VKs) 102 objects (ABL) −3.32log P−(2.87 ± 0.10) 0.87
PW(Ks,VKs) 102 stars (BA) 1.33

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