Constraining Cosmological Parameters Based on Relative Galaxy Ages

@article{Jimenez2002ConstrainingCP,
  title={Constraining Cosmological Parameters Based on Relative Galaxy Ages},
  author={R. Jimenez and A. Loeb},
  journal={The Astrophysical Journal},
  year={2002},
  volume={573},
  pages={37-42}
}
We propose to use relative galaxy ages as a means of constraining cosmological parameters. By measuring the age difference between two ensembles of passively evolving galaxies at somewhat different redshifts, one could determine the derivative of redshift with respect to cosmic time, dz/dt. At high redshifts, z ~ 1-2, this measurement would constrain the equation of state of the dark energy, while at low redshifts, z 0.2, it would determine the Hubble constant, H0. Furthermore, we show that d2z… Expand

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