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arXiv · 1112.3771

Outer disks of lenticular galaxies

Olga K. Sil'chenko
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Abstract

By studying the stellar population properties along the radius in 15 nearby S0 galaxies, I have found that the outer stellar disks are mostly old, with the SSP-equivalent ages of 8-15 Gyr, being often older than the bulges. This fact puts into doubt a currently accepted paradigm that S0 galaxies have formed at z=0.4 by quenching star formation in spiral galaxies.

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Olga K. Sil'chenko. 2011-12-16. Outer disks of lenticular galaxies. https://doi.org/10.1017/s1743921312009180

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