Poe AI suggested I ask this question about Arp 84:  How do the tidal interactions in ARP 84 affect the formation of new stars?

The tidal interactions between the two galaxies in the ARP 84 system have a significant impact on the formation of new stars, known as star formation. Here's how the tidal forces affect star formation in this interacting galaxy pair:

1. Gas and Dust Compression:
   The gravitational forces exerted by the two galaxies on each other cause the gas and dust within the galaxies to become compressed. This compression leads to the collapse of molecular clouds, which are the birthplaces of new stars.

2. Increased Turbulence and Shocks:
   The tidal interactions create significant turbulence and shocks within the gas and dust of the galaxies. These disturbances can further enhance the collapse of molecular clouds, triggering an increase in star formation.

3. Tidal Tails and Bridges:
   The tidal forces between the galaxies have created long, extended tidal tails and bridges of material connecting the two galaxies. These structures contain significant amounts of gas and dust, which can collapse to form new stars.

4. Induced Star Formation:
   The compression and agitation of the gas and dust in the galaxies can also trigger the formation of new stars in regions that would not have experienced star formation otherwise. This "induced" star formation is a common feature of interacting galaxy systems.

5. Starburst Regions:
   The areas where the tidal forces are strongest, such as the regions connecting the two galaxies, often exhibit intense star formation activity, known as "starburst" regions. These regions can produce new stars at much higher rates than normal, non-interacting galaxies.

6. Triggering of Active Galactic Nuclei:
   The gravitational interactions in ARP 84 may also lead to the activation of the supermassive black holes at the centers of the galaxies, creating active galactic nuclei (AGN). The energy output from these AGN can further influence and enhance star formation in the surrounding regions.

The overall result of these tidal interactions in ARP 84 is a significant increase in star formation activity compared to isolated, non-interacting galaxies. This makes ARP 84 an excellent laboratory for studying the effects of galaxy interactions on the formation of new stars and the evolution of galaxies.

Note on processing this is only 1h but I threw away another 4h of sub-prime images.  Best I can do from Bortle 7 for something low on the horizon.  The stretching involved about 5 separate GHS stretches of the L data focsuing on different points of the galaxy that could be stretched.  The RGB was stretched lightly first with the Color option and then RGB, before adding in the L.