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)...

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Bibliographic Details
Main Authors: Wilman, D, Balogh, M, Bower, R, Mulchaey, J, Oemler, A, Carlberg, R, Eke, V, Lewis, I, Morris, S, Whitaker, R
Format: Journal article
Language:English
Published: 2005

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