Cosmological constraints from HII starburst galaxy apparent magnitude and other cosmological measurements
arXiv:2005.12617 · doi:10.1093/mnras/staa2190
Abstract
We use HII starburst galaxy apparent magnitude measurements to constrain cosmological parameters in six cosmological models. A joint analysis of HII galaxy, quasar angular size, baryon acoustic oscillations peak length scale, and Hubble parameter measurements result in relatively model-independent and restrictive estimates of the current values of the non-relativistic matter density parameter and the Hubble constant . These estimates favor a 2.0 to 3.4 (depending on cosmological model) lower than what is measured from the local expansion rate. The combined data are consistent with dark energy being a cosmological constant and with flat spatial hypersurfaces, but do not strongly rule out mild dark energy dynamics or slightly non-flat spatial geometries.
16 pages, 6 figures, MNRAS, in press. Removed observational data that will appear in Gonzalez-Moran's PhD thesis (in preparation) and added comments about early-Universe and late-Universe Hubble constant determinations
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