Final redshift determination of LAMOST pilot survey

Fengfei Wang; A-Li Luo; Haotong Zhang

doi:10.1117/12.925117

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24 September 2012 Final redshift determination of LAMOST pilot survey

Fengfei Wang, A-Li Luo, Haotong Zhang

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Proceedings Volume 8451, Software and Cyberinfrastructure for Astronomy II; 84512Z (2012) https://doi.org/10.1117/12.925117
Event: SPIE Astronomical Telescopes + Instrumentation, 2012, Amsterdam, Netherlands

Abstract

Over 1 million spectra have been obtained by LAMOST telescope during its Pilot Survey, of which half million spectra are released. LAMOST 1D pipeline was designed to classify spectra, measure redshift, and estimate parameters. Data quality is a key factor that affect the results of our reduction. For high signal-to-noise(S/N) spectra, which have good qualities, the software shows a reasonable performance on not only the spectral classification but also the redshift measurement. For bad quality data, the software lost its stability and precision. Human check is adopted into our spectra processing and final data release. By calculate the confidence of our redshift measurement, we assess the correction of our redshift measurement and recalculate the low confidence redshift for data release.

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Fengfei Wang, A-Li Luo, and Haotong Zhang "Final redshift determination of LAMOST pilot survey", Proc. SPIE 8451, Software and Cyberinfrastructure for Astronomy II, 84512Z (24 September 2012); https://doi.org/10.1117/12.925117

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