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What drives the redshift evolution of strong emission line ratios?

Bian, Fuyan; Kewley, Lisa; Groves, Brent; Dopita, Michael


We study the physical mechanisms that cause the offset between low-redshift and high-redshift galaxies on the [O III] λ5007/H β versus [N II] λ6584/H α ‘Baldwin, Phillips & Terlevich’ (BPT) diagram using a sample of local analogues of high-redshift galaxies. These high-redshift analogue galaxies are selected from the Sloan Digital Sky Survey. Located in the same region on the BPT diagram as the ultraviolet selected galaxies at z ∼ 2, these high-redshift analogue galaxies provide an ideal local...[Show more]

CollectionsANU Research Publications
Date published: 2020
Type: Journal article
Source: Monthly Notices of the Royal Astronomical Society
DOI: 10.1093/mnras/staa259
Access Rights: Open Access


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