| Issue |
A&A
Volume 561, January 2014
|
|
|---|---|---|
| Article Number | A44 | |
| Number of page(s) | 4 | |
| Section | Cosmology (including clusters of galaxies) | |
| DOI | https://doi.org/10.1051/0004-6361/201322475 | |
| Published online | 23 December 2013 | |
Forecasting cosmological constraints from age of high-z galaxies
1
Departamento de Astronomia, Observatório Nacional, 20921-400 Rio de Janeiro - RJ, Brasil
e-mail: carlosap@on.br; alcaniz@on.br
2
Departamento de Física, Universidade Estadual do Rio Grande
do Norte, 59625-620 Mossoró - RN, Brasil
e-mail:
aldinezdantas@uern.br
3
Departamento de Física, Universidade Federal do Rio Grande do
Norte, 59072-970 Natal - RN, Brasil
e-mail:
carvalho@dfte.ufrn.br
Received:
12
August
2013
Accepted:
13
September
2013
We perform Monte Carlo simulations based on current age estimates of high-z objects to forecast constraints on the equation of state (EoS) of the dark energy. In our analysis, we use two different EoS parameterizations, namely, the so-called Chevallier-Polarski-Linder (CPL) and its uncorrelated form, and calculate the improvements on the figure of merit (FoM) for both cases. Although there is a clear dependence of the FoM with the size and accuracy of the synthetic age samples, we find that the most substantial gain in FoM comes from a joint analysis involving age and baryon acoustic oscillation data.
Key words: cosmology: theory / cosmology: observations / cosmological parameters / dark energy
© ESO, 2013
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