Spectro-morphology of galaxies

Details Spectro-morphology of galaxies Spectro-morphology of galaxies

Apr 2003

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003ap%26ss.284..969l&link_type=abstract

Astrophysics and Space Science, v. 284, Issue 2, p. 969-972 (2003).

Astronomy and Astrophysics

Astrophysics

1

Galaxies, Morphology, High Redshift, Ultraviolet, Multi-Wavelength, Concentration, Asymmetry

Scientific paper

We present a quantitative method of classification of the multi-wavelength morphology of galaxies, elaborated from the nearby galaxies and usable to high redshift objects. We use the morphological parameters of concentration of light at the galaxy center and 180°-rotationnal asymmetry, computed in several wavelengths, from ultraviolet (UV) to R band. The variation of these indices with λ reflects the proportion of young and old stellar populations in galaxies, that is characteristic of every morphological type: elliptical/lenticular, spiral and irregular. We need to elaborate some templates of these variation spectra from the study of nearby objects, for an application to distant galaxies.

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