Fig. 16.

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Period vs. absolute Wesenheit magnitude in the Gaia bands (W(G, GBP − GRP) for a sample of Galactic T2Cs selected for having a relative error on the parallax of less than 20% (solid circles). The solid line has a slope calculated for the LMC sample and a zero point calculated using the geometric distance to the same galaxy (Pietrzyński et al. 2019).
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