SN 2004et
_(2023-115).png) Here is an image showing the locations of SN 004et and SN 2017eaw in the galaxy NGC 6946, a galaxy known for having many supernovas. | |
| Event type | Supernova |
|---|---|
SN.IIP  | |
| Date | September 27, 2004 |
| Instrument | Spitzer Space Telescope |
| Constellation | Cygnus |
| Right ascension | 20:35:25.330 |
| Declination | +60:07:17.6 |
| Epoch | J2000.0 |
| Distance | ~22 million light years |
| Progenitor type | Red supergiant star |
| Peak apparent magnitude | 20.89 |
| Other designations | SN 2004et |
 Related media on Commons | |
SN 2004et is a bright type IIP[1] supernova that occurred in the spiral galaxy NGC 6946 (The Fireworks Galaxy[2]), about 22 million light years away from earth.[3] The star that made the supernova was falsely identified to be a yellow supergiant but was then identified to be a type red supergiant of 13.8 solar masses. It was discovered alongside SN 2017eaw. SN 2004et showed some rebrightening about 1000 days after the initial supernova probably due to ejecta of circumstellar material or thermal echo.[4][5] SN 2004et was one of the most luminous type IIP supernovae ever recorded and characterized.[6]
Discovery[edit]
SN 200et was discovered in 2004 and observed until 2009 by using the Spitzer InfarRed Array Camera,[7] a ultra sensitive infrared space telescope that is used to study planets, stars, asteroids, comets and distant galaxies.[8]
References[edit]
- ^ Misra, Kuntal; Pooley, Dave; Chandra, Poonam; Bhattacharya, D.; Ray, Alak K.; Sagar, Ram; Lewin, Walter H. G. (October 2007). "Type IIP Supernova SN 2004et: A Multi-Wavelength Study in X-Ray, Optical and Radio". Monthly Notices of the Royal Astronomical Society. 381 (1): 280–292. arXiv:0707.3485. Bibcode:2007MNRAS.381..280M. doi:10.1111/j.1365-2966.2007.12258.x. ISSN 0035-8711. S2CID 14486373.
- ^ "NGC 6946: The 'Fireworks Galaxy' – NASA". Retrieved October 28, 2023.
- ^ information@eso.org. "Dusty supernovae (MIRI)". www.esawebb.org. Retrieved October 28, 2023.
- ^ https://academic.oup.com/mnras/article/523/4/6048/7213984. Retrieved October 28, 2023.
{{cite web}}: Missing or empty|title=(help) - ^ "SN 2004et | Transient Name Server". www.wis-tns.org. Retrieved October 28, 2023.
- ^ https://academic.oup.com/mnras/article/404/2/981/968758.
{{cite web}}: Missing or empty|title=(help) - ^ https://academic.oup.com/mnras/article/523/4/6048/7213984.
{{cite web}}: Missing or empty|title=(help) - ^ "Spitzer Space Telescope – NASA Science". science.nasa.gov. Retrieved October 28, 2023.