Testing a prediction of the merger origin of early-type galaxies: a correlation between stellar populations and asymmetry

Details Testing a prediction of the merger origin of early-type galaxies: a correlation between stellar populations and asymmetry Testing a prediction of the merger origin of early-type galaxies: a correlation between stellar populations and asymmetry

2010-10-12

arxiv.org/abs/1010.2279v1

Astronomy and Astrophysics

Astrophysics

Cosmology and Extragalactic Astrophysics

Astrophysical Journal, in press. 20 pages, 18 figures

Scientific paper

One of the key predictions of the merger hypothesis for the origin of early-type (elliptical and lenticular) galaxies is that tidally-induced asymmetric structure should correlate with signatures of a relatively young stellar population. Such a signature was found by Schweizer and Seitzer (1992; AJ, 104, 1039) at roughly 4sigma confidence. In this paper, we revisit this issue with a nearly ten-fold larger sample of 0.01

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