Astronomy and Astrophysics – Astrophysics
Scientific paper
Sep 2006
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006pabei..24..244f&link_type=abstract
Progress in Astronomy (ISSN 1000-8349), Vol. 24, No. 3, p. 244 - 259 (2006)
Astronomy and Astrophysics
Astrophysics
3
Astrophysics, Galaxies, Review, Velocity Dispersion, Line-Of-Sight Velocity Distributions, Methods
Scientific paper
The line-of-sight velocity distributions (LOSVDs), including velocity dispersions, velocity distributions profile and redshift, are the important observational constraints in our understanding of the galactic dynamics, structures and evolution, as well as the nature of supermassive black holes in the center of galaxies. In this paper, we have given a detailed review for all the methods used for recovering LOSVDs of galaxies and the requirements for observations and data processings. Those methods are based on an assumption that a galactic spectrum can be described as if it were generated from some template stellar spectra which are produced by Doppler shifting and line broadening. The ultimate purpose of these new methods is to get galactic dynamical information from its spectrum as much as possible, to minimize the effect of template mismatching, and to simplify the error analysis.
Fu Cheng-Qi
Hou Jin-Liang
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