| Object Type(s) | Galaxy |
| Relevant Catalog(s) | All (Chron), Arp, NGC |
| Arp Category | Galaxies with concentric rings |
| Obs. Lat/Long | 42° 17', 073° 57' |
| Constellation | Leo |
| Date and Time Observed | 2025-01-26 22:18:00 |
| Instrument | EdgeHD 8" w/f7 reducer-1,422mm FL |
| Camera | Player One Apollo-M Mini |
| Image Details | Up is 264.6 degrees E of N. Total integration time was 30m. Exposures 30s@300g, UV/IR Cut Filter. Darks subtracted, no flats. Dithered and recentered in SharpCap. No guiding. |
| Description | There's a conundrum here. Kanipe and Webb's book reports that Arp places this in the "appearance of fission" category. The database I created for my website which automatically looks up the Arp Category based on the Arp number (based on the AL's Arp excel list) puts this in the "concentric ring" category. The Cal Tech website providing an online version of the Atlas of Peculiar Galaxies omits Arp 232 from Figure 2 (see gallery) which is the only place where you can look up Arp's categories. For no apparent reason it skips from Arp 231 to 233. To my eye, concentric rings seems more descriptive of what I see, and is similar to Arp 229's appearance. Moreover, most of the "with fission" galaxies, starting with Arp 233, show a very distorted galactic center, usually more heavily pinched if not fully broken apart. 232's center shows a slight pinch from the SE (lower left) not nearly as dramatic as other "with fission" galaxies. Arp does call out an "Absorption lane reaching away from galaxy" which is responsible for that pinched look, and may account for Kanipe and Webb's decision. However, Arp put other galaxies with absorption lanes into "Galaxies with irregularities" so I don't think Kanipe and Webb's decision to place it into "with fission" is correct. |
| Related Observations | Arp137 (2) Arp232 (2) NGC2911 (2) NGC2914 (2) |
| Catalog Links | |
