Astronomy:SN 1939C
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Short description: 1939 supernova in galaxy NGC 6946
 A light curve for SN 1939C, adapted from Schaefer (1996).[1] The red arrows show upper limits. | |
| Date | 17 July 1939[2] |
|---|---|
| Constellation | Cepheus[2] |
| Right ascension | 20:34:23.0 [3] |
| Declination | +60:09:37.3[3] |
| Host | Fireworks Galaxy (NGC 6946)[2] |
| Peak apparent magnitude | 13.0[3] |
SN 1939C was a supernova in the Fireworks Galaxy discovered by Fritz Zwicky on 17 July 1939.[4][2] With a right ascension of 20:34:23.0 and a declination of +60:09:37.3, it was 215"W and 24"N away from the center of the Fireworks Galaxy.[2] It was found at magnitude 14.4, after it had peaked, and was estimated to have been as bright as magnitude 13.[3]
References
- ↑ Schaefer, Bradley E. (June 1996). "Volume-limited Samples of Supernovae". Astrophysical Journal 464: 404-411. doi:10.1086/177331. https://articles.adsabs.harvard.edu/pdf/1996ApJ...464..404S. Retrieved 18 May 2025.
- ↑ 2.0 2.1 2.2 2.3 2.4 Frommert, Hartmut; Kronberg, Christine (9 March 2009), NGC 6946, http://messier.seds.org/xtra/ngc/n6946.html, retrieved 31 August 2011
- ↑ 3.0 3.1 3.2 3.3 Schlegel, E. M. (1994). "X-Ray Emission from the Historical Supernovae in the Spiral Galaxy NGC 6946: SN 1980K and 1968D Recovered". The Astronomical Journal 108: 1893. doi:10.1086/117202. Bibcode: 1994AJ....108.1893S.
- ↑ Strömgren, Elis (2 September 1939). "Circular No. 793". Observatory Copenhagen IAU. http://www.cbat.eps.harvard.edu/IAUCs/IAUC0793.jpg.
External links
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