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We estimate the degree to which the baryon density, \₁, 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 \ 20h^-1Mpc and do not include the effects of redshift distortions, evolution, or biasing. With an optimum estimate of P (k) to k\ 2\/ (20 h^-1 Mpc), the 1 \ uncertainties in \₁ are roughly 0. 07 and 0. 016 in flat and open (\₀=0. 3) cosmological models, respectively. This result suggests that it should be possible to test for consistency with big bang nucleosynthesis estimates of \₁ if we live in an open universe.
Goldberg et al. (Sun,) studied this question.