ASTRO:
     type=galaxy
     mag=10.61
     const=Ursa Major
     dist=52 M ly
IMAGE:
     location=Emerald Bay community, Lake Palestine, TX
     BrtlCls=4
     exposure=CMOS OSC; 1047x180s (5.2h), G100
     palette=LRGB
EQUIPMENT:
​     optics=ES102CF APO / Hyperion 24mmEP (afocal) 1.7x, FL(eff.)=1238mm, f(eff.)/12.1
     camera=ZWO ASI2600MC-Pro
     filter=Optolong L-Pro LPS
     mount=Celestron AVX
     guiding=Orion 60x240mm, ZWO ASi224MC
SOFTWARE:
     acquisition=Stellarium, NINA, PHD2
     processing=PixInsight (RCAstro), Photoshop (APF-R, WebSharp-Pro), LrC

Arp 214, also cataloged as NGC 3718, is one of the most strikingly distorted galaxies in the northern sky.  Located roughly 52 M ly away in the constellation Ursa Major, it displays a dramatic, warped “S‑shape” profile with a dark, sweeping dust lane that cuts across its bright central bulge.  These unusual features place it among the select objects included in the publication, Atlas of Peculiar Galaxies, where it appears as entry Arp 214, being a testament to its extraordinary structure and the astrophysical puzzles it presents.

Arp 214’s twisted form is believed to be the result of a long‑term gravitational interaction with its close companion, NGC 3729.  Located only about 150,000 light‑years apart, the smaller member of the pair can be seen near the bottom of the included image.  The encounter has pulled 214's spiral arms into sweeping arcs and may have contributed to the formation of a polar‑orbiting inner gaseous disk, a rare configuration in which gas rotates nearly perpendicular to the main galactic plane.  This distortion makes Arp 214 a candidate to be classified as a polar‑ring galaxy, offering astronomers insight into how galaxies merge, accrete material, and evolve over cosmic time.

Arp 214 owes its name to Dr. Halton Arp, an influential astronomer who spent years at Palomar Observatory studying galaxies that defied conventional classification.  His "Atlas of Peculiar Galaxies" was published in 1966.   Dr. Arp compiled it by studying photographic plates captured through Palomar’s 200‑inch Hale Telescope, which at the time was the world’s most powerful optical instrument.   Arp selected NGC 3718 for its irregularities, gas chromatograph absorption lines, and sharply defined nucleus, noting it is a prime example of how gravitational forces can warp and reshape galaxies.   Since Dr. Arp’s passing in 2013, his legacy at Palomar has endured, advancing the modern study of galactic interactions, and contributing significantly to our understanding of extragalactic astronomy.

To the right of Arp 214 lies another remarkable structure:  Hickson Compact Group 56 (or HCG56), a tight cluster of 5 interacting galaxies located far beyond the main pair of Arp214.  Current estimates place HCG56 appx 490 M ly away, or roughly eight times more distant than Arp214.  Though small in apparent size due its vast distance away from us, HCG56 adds depth to a wonderful display of dynamics within this field of view, and illustrates the beautifully layered structure of the universe across hundreds of millions of light‑years.

260416 - Arp214 "Twisted" galaxy in Ursa Major