Independent Analysis of the Distance to NGC1052-DF2

TL;DR

This paper reevaluates the distance to NGC1052-DF2 using surface brightness fluctuation analysis, highlighting the importance of accurate distance measurements for understanding the galaxy's dark matter content.

Contribution

It provides a more detailed and careful analysis of the galaxy's distance, addressing uncertainties in previous assessments.

Findings

Distance estimate refined with SBF method

Uncertainty in dark matter deficiency remains significant

Highlights importance of precise distance measurements

Abstract

The conclusion that the diffuse galaxy NGC1052-DF2 is deficient in dark matter depends critically on the distance, as noted in the original publication and subsequent works. The results of our preliminary assessment of the SBF distance have already been referenced on the web. Here we present the details of a more careful analysis, supply some context, and comment on the remaining uncertainty.