Skip to Main content Skip to Navigation
Journal articles

Astrocladistics: a phylogenetic analysis of galaxy evolution I. Character evolutions and galaxy histories

Abstract : This series of papers is intended to present astrocladistics in some detail and evaluate this methodology in reconstructing phylogenies of galaxies. Being based on the evolution of all the characters describing galaxies, it is an objective way of understanding galaxy diversity through evolutionary relationships. In this first paper, we present the basic steps of a cladistic analysis and show both theoretically and practically that it can be applied to galaxies. For illustration, we use a sample of 50 simulated galaxies taken from the GALICS database, which are described by 91 observables (dynamics, masses and luminosities). These 50 simulated galaxies are indeed 10 different galaxies taken at 5 cosmological epochs, and they are free of merger events. The astrocladistic analysis easily reconstructs the true chronology of evolution relationships within this sample. It also demonstrates that burst characters are not relevant for galaxy evolution as a whole. A companion paper is devoted to the formalization of the concepts of formation and diversification in galaxy evolution.
Complete list of metadata

Cited literature [17 references]  Display  Hide  Download

https://hal.archives-ouvertes.fr/hal-00019736
Contributor : Didier Fraix-Burnet <>
Submitted on : Monday, February 27, 2006 - 12:06:33 PM
Last modification on : Monday, January 4, 2021 - 9:18:09 AM
Long-term archiving on: : Saturday, April 3, 2010 - 8:49:23 PM

Identifiers

Collections

Citation

Didier Fraix-Burnet, Philippe Choler, Emmanuel Douzery, Anne Verhamme. Astrocladistics: a phylogenetic analysis of galaxy evolution I. Character evolutions and galaxy histories. Journal of Classification, Springer Verlag, 2006, 23, pp.31-56. ⟨10.1007/s00357-006-0003-5⟩. ⟨hal-00019736⟩

Share

Metrics

Record views

631

Files downloads

848