https://mysteriousuniverse.org/2021/06/the-redshift-controversy-halton-arps-peculiar-galaxies-and-the-quasar-conundrum/
The Redshift Controversy: Halton Arp’s Peculiar Galaxies and the Quasar Conundrum
Halton Christian Arp was an American astronomer quite unlike any other. His lifetime of work cataloging astronomical curiosities
the redshiftpeculiar galaxiescontroversyhaltonquasar
https://www.go-astronomy.com/arp-galaxy.php?Arp=39
Arp 39 | Galaxies in Eridanus | Atlas of Peculiar Galaxies
arpgalaxieseridanusatlaspeculiar