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2010MNRAS.401..852R - Mon. Not. R. Astron. Soc., 401, 852-866 (2010/January-2)
Stellar population gradients in early-type cluster galaxies.
RAWLE T.D., SMITH R.J. and LUCEY J.R.
Abstract (from CDS):
We find that stellar population gradients are primarily related to the central metallicity: early-type galaxies with supersolar centres have steep negative metallicity gradients and positive age gradients; those with solar metallicity centres have negligible [Z/H] gradients and negative age gradients. There is a strong observed anticorrelation between the gradients in age and metallicity. While a part of this trend can be attributed to the correlation of measurement errors, we demonstrate that there is an underlying intrinsic relation. For the Shapley galaxies, B - R colour gradients predicted from spectroscopic age and metallicity generally agree well with those measured directly from photometry.
Abstract Copyright: © 2009 The Authors. Journal compilation © 2009 RAS
Journal keyword(s): galaxies: elliptical and lenticular, cD - galaxies: stellar content
Simbad objects: 44
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