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1.13. Structural characteristics of spiral bulges

Published online by Cambridge University Press:  25 May 2016

Yong-Ik Byun*
Affiliation:
Institute of Astronomy, National Central University, Chung-Li, 32054, Taiwan

Extract

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Recently it has been suggested that some bulges are really disks (Kormendy 1993). He argues that some bulges are not spheroidal components of steep luminosity distribution like elliptical galaxies but actually parts of flat disks, whose central luminosity profiles are steeper than the inward extrapolation of an exponential fit to the outer parts. The existence of disk-like bulges strongly supports the idea of disk secular evolution.

Type
Part I. Stellar Cluster, Star Formation
Copyright
Copyright © Kluwer 1998 

References

Byun, Y. I. & Freeman, K. C. 1995, ApJ, 448, 563.Google Scholar
Courteau, S., de Jong, R. S., & Broeils, A. H. 1996, ApJ, 457, L73.Google Scholar
Kormendy, J. 1993, in Galactic Bulges, ed. Dejonghe, H. & Habing, H. J. (Dordrecht: Kluwer), 209.CrossRefGoogle Scholar
Mathewson, D. S., Ford, V. L., & Buchhorn, M. 1992, ApJS, 81, 413.Google Scholar