THE BARYON OSCILLATION SPECTROSCOPIC SURVEY OF SDSS-III
2013
The Baryon Oscillation Spectroscopic Survey (
BOSS) is designed to measure the scale of
baryon acoustic oscillations(BAO) in the clustering of matter over a larger volume than the combined efforts of all previous spectroscopic surveys of large-scale structure.
BOSSuses 1.5 million luminous galaxies as faint as i = 19.9 over 10,000 deg2 to measure BAO to
redshiftsz < 0.7. Observations of neutral hydrogen in the Lyα forest in more than 150,000 quasar spectra (g < 22) will constrain BAO over the
redshiftrange 2.15 < z < 3.5. Early results from
BOSSinclude the first detection of the large-scale three-dimensional clustering of the Lyα forest and a strong detection from the Data Release 9 data set of the BAO in the clustering of massive galaxies at an effective
redshiftz = 0.57. We project that
BOSSwill yield measurements of the
angular diameter distancedA to an accuracy of 1.0% at
redshiftsz = 0.3 and z = 0.57 and measurements of H(z) to 1.8% and 1.7% at the same
redshifts. Forecasts for Lyα forest constraints predict a measurement of an overall dilation factor that scales the highly degenerate DA (z) and H –1(z) parameters to an accuracy of 1.9% at z ~ 2.5 when the survey is complete. Here, we provide an overview of the selection of spectroscopic targets, planning of observations, and analysis of data and data quality of
BOSS.
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