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Gauss: Format of data file

    DATA ON GAUSSIAN FIT
    --------------------

 Spectrum file: TEST
Spectrum label:

X and E.W. units are      Angstroms ; Y units are    Counts
Flux units are     Counts    *   Angstroms

                      G a u s s i a n   F i t                                               !     C o n t i n u u m   F i t
    Peak Posn.   Peak Height     Sigma     Flux           E.W.    R.m.s.    Mean frac err    Order   Sigma Rej.  Frac err Rej.

    6563.336     0.2151E+04     0.2740   0.1476E+04     -8.688  0.7339E+02     1.8157          3       2.000       1.000
The equivalent width tabulated is determined from the observed line profile and the continuum fit; it does not depend on any Gaussians fitted to the lines. The mean fractional deviation is defined as:


\begin{displaymath}
{1\over m}\sum_{j=n}^{n+m} \left\vert{(obs-fit)_j\over err_j}\right\vert
\end{displaymath}



next up previous 79
Next: Échelle reduction
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FIGARO A general data reduction system
Starlink User Note 86
Keith Shortridge, Horst Meyerdierks,
Malcolm Currie, Martin Clayton, Jon Lockley,
Anne Charles, Clive Davenhall,
Mark Taylor, Tim Ash, Tim Wilkins, Dave Axon,
John Palmer, Anthony Holloway and
Vito Graffagnino
2004 February 17
E-mail:starlink@jiscmail.ac.uk

Copyright © 2013 Science and Technology Facilities Council