AustralieFrV1, Main, Exploration, bibRecord, 007235

Morphological classification of galaxies and its relation to physical properties

Identifieur interne : 007235 ( Main/Exploration ); précédent : 007234; suivant : 007236

Morphological classification of galaxies and its relation to physical properties

Auteurs : D. B. Wijesinghe [Australie] ; A. M. Hopkins [Australie] ; B. C. Kelly [États-Unis, Australie] ; N. Welikala [France] ; A. J. Connolly [États-Unis]

Source :

Monthly Notices of the Royal Astronomical Society [ 0035-8711 ] ; 2010-06-01.

RBID : ISTEX:3545851C269429105F38C900E73C9A581E4D54E2

Descripteurs français

Pascal (Inist)
- Analyse image, Analyse régression, Classification, Etude ciel, Evolution galaxies, Formation galaxies, Galaxies, Morphologie, Méthode image, Paramètre asymétrie, Propriété physique, Répartition spatiale.
Wicri :
- topic : Classification.

English descriptors

Abstract

We extend a recently developed galaxy morphology classification method, Quantitative Multiwavelength Morphology (QMM), to connect galaxy morphologies to their underlying physical properties. The traditional classification of galaxies approaches the problem separately through either morphological classification or, in more recent times, analysis of physical properties. A combined approach has significant potential in producing a consistent and accurate classification scheme as well as shedding light on the origin and evolution of galaxy morphology. Here, we present an analysis of a volume‐limited sample of 31 703 galaxies from the fourth data release of the Sloan Digital Sky Survey. We use an image analysis method called Pixel‐z to extract the underlying physical properties of the galaxies, which is then quantified using the concentration, asymmetry and clumpiness parameters. The galaxies also have their multiwavelength morphologies quantified using QMM, and these results are then related to the distributed physical properties through a regression analysis. We show that this method can be used to relate the spatial distribution of physical properties with the morphological properties of galaxies.

Url:

DOI: 10.1111/j.1365-2966.2010.16424.x

Affiliations:

Le document en format XML

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Serveur d'exploration sur les relations entre la France et l'Australie

Morphological classification of galaxies and its relation to physical properties

Morphological classification of galaxies and its relation to physical properties

Source :

Descripteurs français

English descriptors

Abstract

Links toward previous steps (curation, corpus...)

Le document en format XML

Pour manipuler ce document sous Unix (Dilib)

Pour mettre un lien sur cette page dans le réseau Wicri

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