SIMBAD references

2004PASP..116..138C - Publ. Astron. Soc. Pac., 116, 138-147 (2004/February-0)

Parametric recovery of Line-of-Sight velocity distributions from absorption-line spectra of galaxies via penalized likelihood.

CAPPELLARI M. and EMSELLEM E.

Abstract (from CDS):

We investigate the accuracy of the parametric recovery of the line-of-sight velocity distribution (LOSVD) of the stars in a galaxy while working in pixel space. Problems appear when the data have a low signal-to-noise ratio or the observed LOSVD is not well sampled by the data. We propose a simple solution based on maximum penalized likelihood, and we apply it to the common situation in which the LOSVD is described by a Gauss-Hermite series. We compare different techniques by extracting the stellar kinematics from observations of the barred lenticular galaxy NGC 3384 obtained with the SAURON integral-field spectrograph.

Abstract Copyright: ∼

Journal keyword(s): Galaxies: Individual: NGC Number: NGC 3384 - Galaxies: Kinematics and Dynamics - line: profiles - Methods: Numerical

Simbad objects: 3

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