ssppOut_lineindex: Line index table from SSPP

General description: This file contains line indices calculated from local continuum and global continuum by the SEGUE Stellar Parameter Pipeline (SSPP). The global continuum is obtained from fitting a polynomial function to an entire spectrum, while, the local continuum is determined from a linear fit between blue and red side of the central line band to measure its line index. The error measurement in each line index and quality check on each line index measured are also included. Note that the line indices for TiO5, TiO8, CaH1, CaH2, and CaH3 are calculated following the prescription given by the Hammer program (Covey et al. 2007). UVCN and BLCN line indices are computed by he equations given in Smith & Norris (1982), and FeI_4 and FeI_5 indices by the recipe in Friel (1987). FeI_1, FeI_2, FeI_3, and SrII line indices are only computed from the local continuum. Thus, these line indices calculated from different methods report the same values for both the local continuum and the global continuum.

Naming convention: ssppOut-pppp-mmmmm.lineindex.fit, where pppp is a 4-digit plate number, and mmmmm is a 5-digit MJD.

Approximate size: 800 kbytes.

File type: FITS

Read by products:

Written by products: SSPP

Required header keywords:

Optional header keywords: none

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Optional column names:

Notes on case: