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Spectral Classification and Redshift Measurement for the SDSS-III Baryon Oscillation Spectroscopic Survey

Citation:

Bolton AS, Schlegel DJ, Aubourg É, Bailey S, Bhardwaj V, Brownstein JR, Burles S, Chen Y-M, Dawson K, Eisenstein DJ, et al. Spectral Classification and Redshift Measurement for the SDSS-III Baryon Oscillation Spectroscopic Survey. The Astronomical Journal. 2012;144 :144.

Date Published:

November 1, 2012

Abstract:

We describe the automated spectral classification, redshiftdetermination, and parameter measurement pipeline in use for the BaryonOscillation Spectroscopic Survey (BOSS) of the Sloan Digital Sky SurveyIII (SDSS-III) as of the survey's ninth data release (DR9), encompassing831,000 moderate-resolution optical spectra. We give a review of thealgorithms employed, and describe the changes to the pipeline that havebeen implemented for BOSS relative to previous SDSS-I/II versions,including new sets of stellar, galaxy, and quasar redshift templates.For the color-selected "CMASS" sample of massive galaxies at redshift0.4 <~ z <~ 0.8 targeted by BOSS for the purposes of large-scalecosmological measurements, the pipeline achieves an automated

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