Looking through the paper and haven't been able to find it - What was the distance to the closest of the 'suspicious stars'? Really, the locations of each of the 234 would be interesting - perhaps they inhabit a particular area or band?
Here is the pre-print:
<a href="https://arxiv.org/abs/1610.03031" rel="nofollow">https://arxiv.org/abs/1610.03031</a>