SN 1895B
| Event type | Supernova,nova,variable star,suspected variable |
|---|---|
| Type Ia[1] | |
| Date | December 12, 1895[2] |
| Constellation | Centaurus |
| Right ascension | 13h39m57.3s[1] |
| Declination | −31° 38′ 06″[1] |
| Epoch | J2000.0 |
| Distance | 10.3Mly(3.15Mpc)[3] |
| Host | NGC 5253[1] |
| Peakapparent magnitude | +8.49±0.03[4] |
| Other designations | Z Cen,CD−31 10536,HD118843, NOVA Cen 1895[5] |
| Preceded by | SN 1885A |
| Followed by | SN 1937C |
SN 1895Bwas a supernova event in the irregular dwarf galaxyNGC 5253,positioned16″east and23″north of the galactic center.[1]It is among the closest known extragalactic supernova events.[4]The supernova was discovered byWilliamina Flemingon December 12, 1895 after noticing an unusual spectrum on aphotographic platetaken July 18, 1895, and was initially given thevariable star designationZ Centauri.[2][6]Thelight curveis consistent with an event that began ~15 days before the discovery plate was taken,[4]and this indicates the supernova reached a peak visual magnitude of up to 8.49±0.03.[2]
After the light faded, theremnanthas remained undetected at any wavelength,[4]includingX-rayandradio.[2]This suggests the expanding remnant is meeting a low density of surrounding interstellar material, which would be consistent with certain doublewhite dwarfmerger scenarios. The remnant is expected to reach peak radio emission around the year 2195, and it may become detectable at that time.[4]
References
[edit]- ^abcdeBarbon, R.; Buondi, V.; Cappellaro, E.; Turatto, M. (2008).Asiago Supernova Catalogue.Bibcode:2008yCat....1.2024B.
{{cite book}}:|work=ignored (help) - ^abcdSchaefer, Bradley E. (July 1995)."The Peak Brightness of SN 1895B in NGC 5253 and the Hubble Constant".Astrophysical Journal Letters.447:L13.Bibcode:1995ApJ...447L..13S.doi:10.1086/309549.S2CID227285055.
- ^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.arXiv:astro-ph/0012376.Bibcode:2001ApJ...553...47F.doi:10.1086/320638.S2CID42100478.
- ^abcdeCendes, 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.arXiv:2001.03558.Bibcode:2020ApJ...894...39C.doi:10.3847/1538-4357/ab6b2a.S2CID210157144.39.
- ^"SN 1895B".SIMBAD.Centre de données astronomiques de Strasbourg.Retrieved2021-12-01.
- ^"List of Supernovae".Central Bureau for Astronomical Telegrams.International Astronomical Union.Retrieved22 September2013.
- ^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.Retrieved5 December2021.
External links
[edit]- Light curveArchived2017-10-23 at theWayback Machineon theOpen Supernova Catalog
