Astronomy:SN 1895B
| Other designations | Z Cen, CD−31 10536, HD 118843, NOVA Cen 1895[1] |
|---|---|
| Spectral class | Type Ia[2] |
| Date | December 12, 1895[3] |
| Constellation | Centaurus |
| Right ascension | 13h 39m 57.3s[2] |
| Declination | −31° 38′ 06″[2] |
| Epoch | J2000.0 |
| Distance | 10.3 Mly (3.15 Mpc)[4] |
| Host | NGC 5253[2] |
| Peak apparent magnitude | +8.49±0.03[5] |
| Preceded by | SN 1885A |
| Followed by | SN 1937C |
SN 1895B was a supernova event in the irregular dwarf galaxy NGC 5253, positioned 16″ east and 23″ north of the galactic center.[2] It is among the closest known extragalactic supernova events.[5] The supernova was discovered by Williamina Fleming on December 12, 1895 after noticing an unusual spectrum on a photographic plate taken July 18, 1895, and was initially given the variable star designation Z Centauri.[3][6] The light curve is consistent with an event that began ~15 days before the discovery plate was taken,[5] and this indicates the supernova reached a peak visual magnitude of up to 8.49±0.03.[3]
After the light faded, the remnant has remained undetected at any wavelength,[5] including X-ray and radio.[3] This suggests the expanding remnant is meeting a low density of surrounding interstellar material, which would be consistent with certain double white dwarf merger scenarios. The remnant is expected to reach peak radio emission around the year 2195, and it may become detectable at that time.[5]
References
- ↑ "SN 1895B". SIMBAD. Centre de données astronomiques de Strasbourg. http://simbad.u-strasbg.fr/simbad/sim-basic?Ident=SN+1895B.
- ↑ 2.0 2.1 2.2 2.3 2.4 Barbon, R.; Buondi, V.; Cappellaro, E.; Turatto, M. (2008). Asiago Supernova Catalogue. Bibcode: 2008yCat....1.2024B.
- ↑ 3.0 3.1 3.2 3.3 Schaefer, Bradley E. (July 1995). "The Peak Brightness of SN 1895B in NGC 5253 and the Hubble Constant". Astrophysical Journal Letters 447: L13. doi:10.1086/309549. Bibcode: 1995ApJ...447L..13S.
- ↑ Freedman, Wendy L. et al. (May 2001). "Final Results from the Hubble Space Telescope Key Project to Measure the Hubble Constant". The Astrophysical Journal 553 (1): 47–72. doi:10.1086/320638. Bibcode: 2001ApJ...553...47F.
- ↑ 5.0 5.1 5.2 5.3 5.4 Cendes, Y. et al. (May 2020). "Thirty Years of Radio Observations of Type Ia SN 1972E and SN 1895B: Constraints on Circumstellar Shells". The Astrophysical Journal 894 (1): 16. doi:10.3847/1538-4357/ab6b2a. 39. Bibcode: 2020ApJ...894...39C.
- ↑ "List of Supernovae". International Astronomical Union. http://www.cbat.eps.harvard.edu/lists/Supernovae.html.
- ↑ Leibundgut, B.; Tammann, G. A.; Cadonau, R.; Cerrito, D. (September 1991). "Supernova studies. VII. an atlas of light curves of supernovae type I.". Astronomy & Astrophysics Supplement Series 89: 537–589. Bibcode: 1991A&AS...89..537L. https://ui.adsabs.harvard.edu/abs/1991A&AS...89..537L. Retrieved 5 December 2021.
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