Galaxy groups at 0.3 ≤ z ≤ 0.55 - II. Evolution to z ∼ 0
We compare deep Magellan spectroscopy of 26 groups at 0.3 ≤ z ≤ 0.55, selected from the Canadian Network for Observational Cosmology 2 field survey, with a large sample of nearby groups from the 2PIGG catalogue. We find that the fraction of group galaxies with significant [O II]λ3727 emission (≥5 Å)...
Main Authors: | Wilman, D, Balogh, M, Bower, R, Mulchaey, J, Oemler, A, Carlberg, R, Eke, V, Lewis, I, Morris, S, Whitaker, R |
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Format: | Journal article |
Language: | English |
Published: |
2005
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