Origin of Hubble Sequence --- Bifurcation into Spiral and Elliptical Galaxies ---

Details Origin of Hubble Sequence --- Bifurcation into Spiral and Elliptical Galaxies --- Origin of Hubble Sequence --- Bifurcation into Spiral and Elliptical Galaxies ---

Dec 1999

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1999sf99.proc...32s&link_type=abstract

Star Formation 1999, Proceedings of Star Formation 1999, held in Nagoya, Japan, June 21 - 25, 1999, Editor: T. Nakamoto, Nobeyam

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Evolutionary bifurcation of cosmological density perturbation is discussed according to the galaxy formation theory proposed by Susa & Umemura (1999). We plot the observed elliptical and spiral galaxies on the cosmological initial condition plane (collapse epoch v.s. mass), with the help of virial theorem. On the initial condition plane, the boundary between the elliptical and spiral galaxies coincide very well with the predicted line by the theory.

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