We use the latest HII galaxy measurements to determine the value of H0 adopting a combination of model-dependent and model-independent method. By constraining five cosmological models, we find that the obtained values of H0 are more consistent with the recent local measurement by Riess et al. 2016 (hereafter R16) at 1σ confidence level, and that these five models prefer a higher best-fit value of H0 than R16's result. To check the correctness of H0 values obtained by model-dependent method, for the first time, we implement the model-independent Gaussian processes (GP) using the HII galaxy measurements. We find that the GP reconstructions also prefer a higher value of H0 than R16's result. Therefore, we conclude that the current HII galaxy measurements support a higher cosmic expansion rate.
@article{arxiv.1612.09023,
title = {Determining $H_0$ with the latest HII galaxy measurements},
author = {Deng Wang and Xin-He Meng},
journal= {arXiv preprint arXiv:1612.09023},
year = {2017}
}
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arXiv admin note: text overlap with arXiv:1610.01202