Astronomy:SN 2004et
_(2023-115).png) Locations of SN 004et and SN 2017eaw in the Fireworks Galaxy, known for having many supernovas | |
| Event type | Supernova |
|---|---|
| Spectral class | Type II-P |
| Date | c. 22 million years ago (discovered 2004) |
| Instrument | Spitzer Space Telescope |
| Constellation | Cygnus |
| Right ascension | 20:35:25.330 |
| Declination | +60:07:17.6 |
| Epoch | J2000.0 |
| Distance | c. 22 million ly |
| Host | Fireworks Galaxy |
| Progenitor | Red supergiant c. 13.8 solar masses |
| Peak apparent magnitude | 20.89 |
SN 2004et is a bright Type II-P[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. SN 2004et showed some rebrightening about 1,000 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 II-P supernovae ever recorded and characterized.[6]
Discovery
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 galaxies.[8]
References
- ↑ 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. doi:10.1111/j.1365-2966.2007.12258.x. ISSN 0035-8711. Bibcode: 2007MNRAS.381..280M.
- ↑ "NGC 6946: The 'Fireworks Galaxy' – NASA" (in en-US). https://www.nasa.gov/image-article/ngc-6946-fireworks-galaxy/.
- ↑ information@eso.org. "Dusty supernovae (MIRI)" (in en). https://www.esawebb.org/images/dustysupernovae1/.
- ↑ "JWST observations of dust reservoirs in Type II-P supernovae 2004et and 2017eaw". https://academic.oup.com/mnras/article/523/4/6048/7213984.
- ↑ "SN 2004et | Transient Name Server". https://www.wis-tns.org/object/2004et.
- ↑ Maguire, K.; Di Carlo, E.; Smartt, S. J.; Pastorello, A.; Tsvetkov, D. Yu.; Benetti, S.; Spiro, S.; Arkharov, A. A. et al. (2010-05-04). "Optical and near-infrared coverage of SN 2004et: physical parameters and comparison with other Type IIP supernovae: Optical and NIR coverage of SN 2004et" (in en). Monthly Notices of the Royal Astronomical Society 404 (2): 981–1004. doi:10.1111/j.1365-2966.2010.16332.x.
- ↑ Shahbandeh, Melissa; Sarangi, Arkaprabha; Temim, Tea; Szalai, Tamás; Fox, Ori D; Tinyanont, Samaporn; Dwek, Eli; Dessart, Luc et al. (2023-06-22). "JWST observations of dust reservoirs in type IIP supernovae 2004et and 2017eaw" (in en). Monthly Notices of the Royal Astronomical Society 523 (4): 6048–6060. doi:10.1093/mnras/stad1681. ISSN 0035-8711. https://academic.oup.com/mnras/article/523/4/6048/7213984.
- ↑ "Spitzer Space Telescope – NASA Science" (in en). https://science.nasa.gov/mission/spitzer/.
 |  |
