%0 Journal Article
%A Cardiel López, Nicolás
%A Gorgas García, Francisco Javier
%A Cenarro, J.
%A González, J. J.
%T Reliable random error estimation in the measurement of line-strength indices
%D 1998
%@ 0365-0138
%U https://hdl.handle.net/20.500.14352/59537
%X We present a new set of accurate formulae for the computation of random errors in the measurement of atomic and molecular line-strength indices. The new expressions are in excellent agreement with numerical simulations. We have found that, in some cases, the use of approximated equations can give misleading line-strength index errors. It is important to note that accurate errors can only be achieved after a full control of the error propagation throughout the data reduction with a parallel processing of data and error images. Finally, simple recipes for the estimation of the required signal-to-noise ratio to achieve a fixed index error are presented.
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