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Variations in the Bivariate Brightness Distribution with different galaxy types

Nicholas Cross·Simon Driver·David Lemon·Jochen Liske
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Abstract

We present Bivariate Brightness Distributions (BBDs) for four spectral types discriminated by the 2dFGRS. We discuss the photometry and completeness of the 2dFGRS using a deep, wide-field CCD imaging survey. We find that there is a strong luminosity-surface brightness correlation amongst galaxies with medium to strong emission features, with gradient $β_μ=0.25\pm0.05$ and width $σ_μ=0.56\pm0.01$. Strong absorption line galaxies, show a bimodal distribution, with no correlation between luminosity and surface brightness.

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Nicholas Cross, Simon Driver, David Lemon, Jochen Liske. 2002-02-06. Variations in the Bivariate Brightness Distribution with different galaxy types. https://arxiv.org/abs/astro-ph/0202131

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