Abstract
Evidence has been accumulating1–4 for strong evolutionary effects in the stellar populations of giant elliptical galaxies with cosmological epoch. In several studies of elliptical galaxies at high redshifts, including our own investigation into the colours of 3C radio galaxies, it has been apparent that the galaxies are generally considerably bluer at earlier epochs. Using a CCD imaging photometer we have now investigated the location of the excess of short wavelength light in one 3C radio galaxy, 3C352, at a redshift of 0.81. The excess is present throughout the galaxy and is not concentrated at the nucleus. This supports the hypothesis that it is caused by an evolving stellar population and indicates that the regions of star formation are not concentrated at the nucleus.
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Lilly, S., Longair, M. & McLean, I. A radio galaxy at high redshift undergoing strong stellar evolution. Nature 301, 488–491 (1983). https://doi.org/10.1038/301488a0
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DOI: https://doi.org/10.1038/301488a0
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