The distance to NGC1042 in the context of its proposed association with the dark matter-deficient galaxies NGC1052-DF2 and NGC1052-DF4. (arXiv:1902.02807v1 [astro-ph.GA])

The distance to NGC1042 in the context of its proposed association with the dark matter-deficient galaxies NGC1052-DF2 and NGC1052-DF4. (arXiv:1902.02807v1 [astro-ph.GA])
<a href="http://arxiv.org/find/astro-ph/1/au:+Dokkum_P/0/1/0/all/0/1">Pieter van Dokkum</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Danieli_S/0/1/0/all/0/1">Shany Danieli</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Romanowsky_A/0/1/0/all/0/1">Aaron Romanowsky</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Abraham_R/0/1/0/all/0/1">Roberto Abraham</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Conroy_C/0/1/0/all/0/1">Charlie Conroy</a>

It has been suggested that the dark matter-deficient galaxies NGC1052-DF2 and
NGC1052-DF4 might not be members of the NGC1052 group but in the foreground at
$sim 13$ Mpc, and satellites of the bright spiral galaxy NGC1042. We
previously showed that the CMDs of the galaxies are inconsistent with this
hypothesis, and derived distances of 19-20 Mpc from their surface brightness
fluctuation signals. Here we note that NGC1042 is almost certainly a member of
the NGC1052 group as well, based on its radial velocity, the HI distribution in
the NGC1052/NGC1042 system, and the Tully-Fisher relation.

It has been suggested that the dark matter-deficient galaxies NGC1052-DF2 and
NGC1052-DF4 might not be members of the NGC1052 group but in the foreground at
$sim 13$ Mpc, and satellites of the bright spiral galaxy NGC1042. We
previously showed that the CMDs of the galaxies are inconsistent with this
hypothesis, and derived distances of 19-20 Mpc from their surface brightness
fluctuation signals. Here we note that NGC1042 is almost certainly a member of
the NGC1052 group as well, based on its radial velocity, the HI distribution in
the NGC1052/NGC1042 system, and the Tully-Fisher relation.

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