The segue stellar parameter pipeline. I. Description and comparison of individual methods

Young Sun Lee, Timothy C. Beers, Thirupathi Sivarani, Carlos Allende Prieto, Lars Koesterke, Ronald Wilhelm, Paola Re Fiorentin, Coryn A.L. Bailer-Jones, John E. Norris, Constance M. Rockosi, Brian Yanny, Heidi J. Newberg, Kevin R. Covey, Hao Tong Zhang, A. Li Luo

Research output: Contribution to journalArticlepeer-review

408 Scopus citations

Abstract

We describe the development and implementation of the Sloan Extension for Galactic Exploration and Understanding (SEGUE) Stellar Parameter Pipeline (SSPP). The SSPP is derived, using multiple techniques, radial velocities, and the fundamental stellar atmospheric parameters (effective temperature, surface gravity, and metallicity) for AFGK-type stars, based on medium-resolution spectroscopy and ugriz photometry obtained during the course of the original Sloan Digital Sky Survey (SDSS-I) and its Galactic extension (SDSS-II/SEGUE). The SSPP also provides spectral classification for a much wider range of stars, including stars with temperatures outside the window where atmospheric parameters can be estimated with the current approaches. This is Paper I in a series of papers on the SSPP; it provides an overview of the SSPP, and tests of its performance using several external data sets. Random and systematic errors are critically examined for the current version of the SSPP, which has been used for the sixth public data release of the SDSS (DR-6).

Original languageEnglish
Pages (from-to)2022-2049
Number of pages28
JournalAstronomical Journal
Volume136
Issue number5
DOIs
StatePublished - Nov 1 2008

Keywords

  • Methods: data analysis
  • Stars: abundances
  • Stars: fundamental parameters
  • Surveys
  • Techniques: spectroscopic

ASJC Scopus subject areas

  • Astronomy and Astrophysics
  • Space and Planetary Science

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