For H₀ = 71 km s^-1 Mpc^-1, $\Omega_{\rm M} = 0.27$ and $\Omega_{\rm vac} = 0.73$ , resulting in a linear to angular scale ratio of 2.165 kpc arcsec^-1. Derived using E. L. Wright's cosmology calculator at http://www.astro.ucla.edu/wright/CosmoCalc.html

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The National Radio Astronomy Observatory is operated by Associated Universities, Inc., under cooperative agreement with the National Science Foundation.

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... EVN

The European VLBI Network is a joint facility of European, Chinese, South African and other radio astronomy institutes funded by their national research councils.

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... velocity

We use the systemic velocity of $V_{\rm hel} = 36~522$ km s^-1 ( $z = 0.12174 \pm 0.00002$ ) derived from the detailed analysis of the emission lines presented in Holt et al. (2003).

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