期刊
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
卷 497, 期 3, 页码 3191-3203出版社
OXFORD UNIV PRESS
DOI: 10.1093/mnras/staa2190
关键词
cosmological parameters; dark energy; cosmology: observations
资金
- Department of Energy [DE-SC0019038, DE-SC0011840]
- NSF [CNS-1006860, EPS-1006860, EPS-0919443, ACI-1440548, CHE-1726332, NIH P20GM113109]
- U.S. Department of Energy (DOE) [DE-SC0011840, DE-SC0019038] Funding Source: U.S. Department of Energy (DOE)
We use H II 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 Omega(m0) and the Hubble constant H-0. These estimates favour a 2.0-3.4 sigma (depending on cosmological model) lower H-0 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.
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