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A method to derive velocity dispersions from composite spectra
Published online by Cambridge University Press: 07 August 2017
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Different methods have been used to derive velocity dispersions of stellar populations in bulges of galaxies. In all cases, the spectrum of a K giant is used as template: the stellar spectrum convolved with the appropriate gaussian, the Fourier transform technique, or the cross-correlation technique (see Dalle Ore et al., 1991, for a review).
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