KT Eridani
| KT Eridani | |
 (c) I, Kevin Heider, CC BY-SA 3.0 KT Eridani 30 november 2009 under fullmåne | |
| Observationsdata Epok: J2000.0 | |
|---|---|
| Stjärnbild | Eridanus |
| Rektascension | 04t 47m 54,21s[1] |
| Deklination | -10° 10′ 43,1″ |
| Skenbar magnitud () | +5,4 (maximum), +16,5 (minimum) |
| Stjärntyp | |
| Variabeltyp | Nova (NA +E) |
| Astrometri | |
| Avstånd | 22820 lå (7000 pc) |
| Andra beteckningar | |
| Nova Eridani 2009, 2MASS J04475419-1010429, USNO-B1.0 0798-0048707, VSX J044754.2-101043 | |
KT Eridani eller Nova Eridani 2009 var en nova i stjärnbilden Eridanus. Den upptäcktes den 25 november 2009 av K. Itagaki i prefekturen Yamagata, Japan. Novan tilldrog sig forskarnas intresse för sitt oväntat snabba avklingande från maximum. [2]
I de flesta novasystem samlar en vit dvärg materia från en stjärna i huvudserien. KT Eridani däremot har förmodligen en röd jättestjärna som följeslagare.[3][4]
Se även
Referenser
- ^ ”Basic data : NOVA Eri 2009 -- Nova”. SIMBAD. Centre de Données astronomiques de Strasbourg. http://simbad.u-strasbg.fr/simbad/sim-basic?Ident=KT+Eridani&submit=SIMBAD+search. Läst 30 april 2015.
- ^ Jurdana-Šepić, Ribeiro, Darnley, Munari, Bode. ”Historical light curve and search for previous outbursts of Nova KT Eridani (2009)”. Astronomy & Astrophysics. EDP Sciences. http://www.aanda.org/articles/aa/abs/2012/01/aa17806-11/aa17806-11.html. Läst 19 september 2013.
- ^ Jurdana-Šepić, Ribeiro, Darnley, Munari, Bode (2012). ”Historical light curve and search for previous outbursts of Nova KT Eridani (2009)”. Astronomy & Astrophysics 537: sid. A34.
- ^ Yamaoka, Itagaki, Guido, Sostero, Maehara, Fujii, Arai, Isogai, Imamura, Rudy, Prater, Russell, Puetter, Perry, Kazarovets. ”KT Eridani = Nova Eridani 2009”. IAU Circ., 9098, 1 (2009). SAO/NASA. http://adsabs.harvard.edu/abs/2009IAUC.9098....1Y. Läst 19 september 2013.
Media som används på denna webbplats
Nova-Eridani-2009-LB4.jpg
(c) I, Kevin Heider, CC BY-SA 3.0
2 minute exposure of Nova Eridani 2009 with a 14" telescope at 2009-11-30 16:13 UT (2009-12-01 00:13 Pingelly time) in the constellation Eridanus. This image was taken with a 96% full moon nearby. The source of this He/N-class nova could be an apparent magnitude 15.35 star. In the upper right hand corner is the star HD 30437 at a known magnitude of 10.2. On 2009-11-28 the nova was estimated at magnitude 8.4. Other names for this nova are: 000-BJR-847, VSX J044754.2-101043, and N Eri 2009.
(c) I, Kevin Heider, CC BY-SA 3.0
2 minute exposure of Nova Eridani 2009 with a 14" telescope at 2009-11-30 16:13 UT (2009-12-01 00:13 Pingelly time) in the constellation Eridanus. This image was taken with a 96% full moon nearby. The source of this He/N-class nova could be an apparent magnitude 15.35 star. In the upper right hand corner is the star HD 30437 at a known magnitude of 10.2. On 2009-11-28 the nova was estimated at magnitude 8.4. Other names for this nova are: 000-BJR-847, VSX J044754.2-101043, and N Eri 2009.