Astronomy: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 a “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". https://images.mantrapskies.com/catalog/OTHER/VII_ZW_466-NGC4515/index.htm.
- ↑ 2.0 2.1 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. doi:10.1086/308074. ISSN 0004-637X. https://iopscience.iop.org/article/10.1086/308074.
- ↑ Thompson, L. A.; Theys, J. C. (September 1978). "UBVR photometry of the ring galaxy VII Zw 466." (in en). The Astrophysical Journal 224: 796–807. doi:10.1086/156427. ISSN 0004-637X. https://ui.adsabs.harvard.edu/abs/1978ApJ...224..796T/abstract.
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