The end of the beginnings

Roberto Abraham
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Roberto Abraham: Royal Greenwich Observatory

Nature, 1997, vol. 387, issue 6636, 850-851

Abstract: Astronomers can now peer far back in time, to redshifts of up toz= 4, and look at galaxies at different stages over 80-90 per cent of the total age of the Universe. A result is that the outline of a consensus about how galaxies form and evolve, as quantified by changes in star-formation rates, is emerging. A hierarchical picture best fits the evidence, one in which small, amorphous proto-galaxies form first, eventually settling into disk galaxies such as spirals, which can then also merge to form ellipticals.

Date: 1997
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DOI: 10.1038/43059

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