Abstract
There is a growing body of evidence indicating young ages, 8±3 Gyrs, for elliptical galaxies and significant age gradients with a younger population residing at the centre. The data appear to be consistent with a scenario where elliptical galaxies are assembled hierarchically with low luminosity galaxies forming first. Late star formation, associated with the last merging event and usually involving only a small fraction of the galaxy mass, could then account for the low age estimates of some luminous galaxies.
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Davies, R.L. (1996). The Star Formation History of Elliptical Galaxies. In: Bender, R., Davies, R.L. (eds) New Light on Galaxy Evolution. International Astronomical Union / Union Astronomique Internationale, vol 171. Springer, Dordrecht. https://doi.org/10.1007/978-94-009-0229-9_6
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DOI: https://doi.org/10.1007/978-94-009-0229-9_6
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