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Dark Energy Survey Year 1 Results: Measurement of the Baryon Acoustic Oscillation scale in the distribution of galaxies to redshift 1 Article uri icon

Authors

  • Abbott, T. M. C., Abdalla, F. B., Alarcon, A., Allam, S., Andrade-Oliveira, F., Annis, J., Avila, S., Banerji, M., Banik, N., Bechtol, K., Bernstein, R. A., Bernstein, G. M., Bertin, E., Brooks, D., Buckley-Geer, E., Burke, D. L., Camacho, H., Carnero Rosell, A., Carrasco Kind, M., Carretero, J., Castander, F. J., Cawthon, R., Chan, K. C., Crocce, M., Cunha, C. E., et al

abstract

  • We present angular diameter distance measurements obtained by locating the BAO scale in the distribution of galaxies selected from the first year of Dark Energy Survey data. We consider a sample of over 1.3 million galaxies distributed over a footprint of 1336 deg2 with 0.6 with 0.6 photo A, at the effective redshift of our sample divided by the true physical scale of the BAO feature, rd. We obtain close to a 4 per cent distance measurement of DA(zeff = 0.81)/rd = 10.75 ± 0.43. These results are consistent with the flat ?CDM concordance cosmological model supported by numerous other recent experimental results.

publication date

  • 2019