### Abstract

We estimate the degree to which the baryon density, Ω_{b}, can be determined from the galaxy power spectrum measured from large-scale galaxy redshift surveys, and in particular, the Sloan Digital Sky Survey. A high baryon density will cause wiggles to appear in the power spectrum, which should be observable at the current epoch. We assume linear theory on scales ≥20 h^{-1} Mpc and do not include the effects of redshift distortions, evolution, or biasing. With an optimum estimate of P(k) to k ∼ 2π/(20 h^{-1} Mpc), the 1 σ uncertainties in Ω_{b} are roughly 0.07 and 0.016 in flat and open (Ω_{0} = 0.3) cosmological models, respectively. This result suggests that it should be possible to test for consistency with big bang nucleosynthesis estimates of Ω_{b} if we live in an open universe.

Original language | English (US) |
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Pages (from-to) | 29-43 |

Number of pages | 15 |

Journal | Astrophysical Journal |

Volume | 495 |

Issue number | 1 PART I |

DOIs | |

State | Published - 1998 |

### All Science Journal Classification (ASJC) codes

- Astronomy and Astrophysics
- Space and Planetary Science

### Keywords

- Cosmology: Theory
- Large-scale structure of universe
- Methods: Data analysis
- Methods: Statistical

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## Cite this

*Astrophysical Journal*,

*495*(1 PART I), 29-43. https://doi.org/10.1086/305284