VII Zw 466
| VII Zw 466 | |
|---|---|
 Image of BII Zw 466 from SDSS | |
| Observation data | |
| Constellation | Draco |
| Distance | 650 million |
| Characteristics | |
| Type | “Empty” Collisional ring galaxy |
| Notable features | The inner region where core is empty |
VII Zw 466 is a collision ring galaxy located 650 million light years from Earth in the tail of the Constellation of Draco. It can also be described as an “empty ring galaxy” due to the lack of stuff at the center where the galactic core would normally be.[1] The origin of the ring shape of VII Zw 466 is from a slightly off-center collision with a high-speed intruder galaxy that was small but massive galaxy. The collision between the two galaxies produced a rapidly expanding density wave in the disk. This collision also produced a high star formation rate.[2][3]
The disk of this galaxy has a large asymmetry in the radio continuum. This could be due to the disk of VII Zw 466 trapping cosmic ray particles or an enhanced rate of supernova activity.[2]
References
- ↑ "Mantrap Skies Astronomical Image Catalog: VII ZW 466". images.mantrapskies.com. Retrieved 2025-07-11.
- 1 2 Appleton, P. N.; Charmandaris, V.; Horellou, C.; Mirabel, I. F.; Ghigo, F.; Higdon, J. L.; Lord, S. (1999-12-10). "Plasma and Warm Dust in the Collisional Ring Galaxy VII Zw 466 from VLA and ISO Observations". The Astrophysical Journal. 527 (1): 143–153. arXiv:astro-ph/9907122. doi:10.1086/308074. ISSN 0004-637X.
- ↑ Thompson, L. A.; Theys, J. C. (September 1978). "UBVR photometry of the ring galaxy VII Zw 466". The Astrophysical Journal. 224: 796–807. doi:10.1086/156427. ISSN 0004-637X.