SN 2004et

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SN 2004et
NGC 6946 (Kitt Peak National Observatory) (2023-115).png
Locations of SN 004et and SN 2017eaw in the Fireworks Galaxy, known for having many supernovas
Event type Supernova
Type II-P
Datec. 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
Distancec. 22 million ly
Host Fireworks Galaxy
Progenitor Red supergiant c. 13.8 solar masses
Peak apparent magnitude 20.89
Other designationsSN 2004et
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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

  1. ↑ 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.
  2. ↑ "NGC 6946: The 'Fireworks Galaxy' – NASA" . Retrieved October 28, 2023.
  3. ↑ information@eso.org. "Dusty supernovae (MIRI)". www.esawebb.org. Retrieved October 28, 2023.
  4. ↑ "JWST observations of dust reservoirs in Type II-P supernovae 2004et and 2017eaw" . Retrieved October 28, 2023.
  5. ↑ "SN 2004et | Transient Name Server". www.wis-tns.org. Retrieved October 28, 2023.
  6. ↑ Maguire, K.; Di Carlo, E.; Smartt, S. J.; Pastorello, A.; Tsvetkov, D. Yu.; Benetti, S.; Spiro, S.; Arkharov, A. A.; Beccari, G.; Botticella, M. T.; Cappellaro, E.; Cristallo, S.; Dolci, M.; Elias-Rosa, N.; Fiaschi, M. (May 4, 2010). "Optical and near-infrared coverage of SN 2004et: physical parameters and comparison with other Type IIP supernovae: Optical and NIR coverage of SN 2004et". Monthly Notices of the Royal Astronomical Society. 404 (2): 981–1004. arXiv: 0912.3111 . doi: 10.1111/j.1365-2966.2010.16332.x .
  7. ↑ Shahbandeh, Melissa; Sarangi, Arkaprabha; Temim, Tea; Szalai, Tamás; Fox, Ori D; Tinyanont, Samaporn; Dwek, Eli; Dessart, Luc; Filippenko, Alexei V; Brink, Thomas G; Foley, Ryan J; Jencson, Jacob; Pierel, Justin; Zsíros, Szanna; Rest, Armin (June 22, 2023). "JWST observations of dust reservoirs in type IIP supernovae 2004et and 2017eaw". Monthly Notices of the Royal Astronomical Society. 523 (4): 6048–6060. arXiv: 2301.10778 . doi: 10.1093/mnras/stad1681 . ISSN   0035-8711.
  8. ↑ "Spitzer Space Telescope – NASA Science". science.nasa.gov. Retrieved October 28, 2023.
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