Sorry, but that's BS. Most real experts view NGC 7603 as unanswerable proof of Arp's thesis, i.e. a very low and two very high redshift objects which are unarguably part and parcel of the same thing:
Do your own google search on ngc7603.
The Hubble telescope and its successors have completely discredited Arp. Sorry to be the bearer of bad news, but facts are facts.
Sorry, but that's BS. Most real experts view NGC 7603 as unanswerable proof of Arp's thesis, i.e. a very low and two very high redshift objects which are unarguably part and parcel of the same thing:
Do your own google search on ngc7603.