# The TRGB distance to the second galaxy "missing dark matter". Evidence for two groups of galaxies at 13.5 and 19 Mpc in the line of sight of NGC1052

## TL;DR

This study uses the Tip of the Red Giant Branch method to determine galaxy distances, revealing two galaxy groups at 13.5 and 19 Mpc and clarifying the distance to NGC1052-DF4, impacting dark matter studies.

## Contribution

It provides a precise TRGB-based distance measurement to NGC1052-DF4, resolving previous discrepancies and identifying two galaxy groups along the line of sight.

## Key findings

- NGC1052-DF4 is at 14.2 Mpc, closer than previously thought.
- The field contains two galaxy groups at 13.5 Mpc and 19 Mpc.
- Globular clusters in NGC1052-DF4 are similar to those in the Milky Way.

## Abstract

A second galaxy ``missing dark matter" (NGC1052-DF4) has been recently reported. Here we show, using the location of the Tip of the Red Giant Branch (TRGB), that the distance to this galaxy is 14.2+-0.7 Mpc. This locates the galaxy 6 Mpc closer than previously determined. We also analyse the distances to the brightest galaxies in the field-of-view (FOV) of NGC1052. We find this field is populated by two groups of galaxies in projection: one dominated by NGC1052 and NGC1047 at ~19 Mpc and another group containing NGC1042 and NGC1035 (as well as [KKS2000]04 and NGC1052-DF4) at ~13.5 Mpc. At a distance of 13.5 Mpc the globular clusters of NGC1052-DF4 have the same properties than globular clusters in the Milky Way and other dwarf galaxies.