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Título:
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Reliable random error estimation in the measurement of line-strength indices
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Autores:
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Cardiel López, Nicolás ;
Gorgas García, Francisco Javier ;
Cenarro, J. ;
González, J. J.
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Tipo de documento:
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texto impreso
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Editorial:
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EDP Sciences, 1998-02
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Dimensiones:
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application/pdf
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Nota general:
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info:eu-repo/semantics/openAccess
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Idiomas:
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Palabras clave:
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Estado = Publicado
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Materia = Ciencias: Física: Astrofísica
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Materia = Ciencias: Física: Astronomía
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Tipo = Artículo
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Resumen:
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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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En línea:
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https://eprints.ucm.es/id/eprint/29953/1/cardiel76preprint.pdf
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