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Less than 10 percent of star formation in z ~ 0.6 massive galaxies is triggered by major interactions

Robaina, Aday R; Bell, Eric F; Skelton, Rosalind E; McIntosh, Daniel H; Somerville, Rachel S; Zheng, Xian Zhong; Rix, Hans-Walter; Bacon, David; Balogh, M; Barazza, Fabio D; Wolf, Christian


Both observations and simulations show that major tidal interactions or mergers between gas-rich galaxies can lead to intense bursts of star formation. Yet, the average enhancement in star formation rate (SFR) in major mergers and the contribution of such events to the cosmic SFR are not well estimated. Here we use photometric redshifts, stellar masses, and UV SFRs from COMBO-17, 24 μm SFRs from Spitzer, and morphologies from two deep Hubble Space Telescope (HST) cosmological survey fields...[Show more]

CollectionsANU Research Publications
Date published: 2009
Type: Journal article
Source: Astrophysical Journal, The
DOI: 10.1088/0004-637X/704/1/324


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