How old is the Universe ? Setting new constraints on the age of the Universe

Details How old is the Universe ? Setting new constraints on the age of the Universe How old is the Universe ? Setting new constraints on the age of the Universe

2001-05-22

arxiv.org/abs/astro-ph/0105384v1

Mon.Not.Roy.Astron.Soc. 327 (2001) L47

Astronomy and Astrophysics

Astrophysics

8 pages, 3 figures, uses mn.sty. Submitted to MNRAS (Letter)

Scientific paper

10.1046/j.1365-8711.2001.04979.x

There are three independent techniques for determining the age of the universe: via cosmochronology of long-lived radioactive nuclei, via stellar modelling and population synthesis of the oldest stellar populations, and via the precision cosmology that has become feasible with the mapping of the acoustic peaks in the cosmic microwave background. We demonstrate that all three methods give completely consistent results, and enable us to set rigorous bounds on the maximum and minimum ages that are allowed for the universe. We present new constraints on the age of the universe by performing a multiband colour analysis of bright cluster ellipticals over a large redshift range (0.3

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