SSTGFLS J222557+601148
| Emission nebula | |
|---|---|
| Planetary nebula | |
| Observation data: J2000.0 epoch | |
| Right ascension | 22h 25m 57s[1] |
| Declination | 60° 11.8′[1] |
| Distance | 2000–3000[2] pc |
| Constellation | Cepheus |
| Notable features | Originally misclassified as a supernova remnant[2] |
| Designations | EQ J222557+601158 |
SSTGFLS J222557+601148 is a planetary nebula in the constellation Cepheus. Located between 2000 and 3000 parsecs distant from Earth, it was originally classified in 2006 as a supernova remnant. Thought to be the first supernova remnant first detected in the infrared wavelengths,[1] the spectrum and properties of the object did not match up well with that of a typical supernova remnant, and it was reclassified as a planetary nebula in 2010. A candidate central star has been identified, with an apparent infrared magnitude of 22.4.[2]
References
- ^ a b c Morris, Patrick W.; Stolovy, Susan; Wachter, Stefanie; Noriega-Crespo, Alberto; Pannuti, Thomas G.; Hoard, D. W. (2006). "Tentative Discovery of a New Supernova Remnant in Cepheus: Unveiling an Elusive Shell in the Spitzer Galactic First Look Survey". The Astrophysical Journal. 640 (2): L179–L182. arXiv:astro-ph/0602552. Bibcode:2006ApJ...640L.179M. doi:10.1086/503669. S2CID 17002674.
- ^ a b c Fesen, Robert; Milisavljevic, Dan (2010). "The Nature of the Strong 24 micron Spitzer Source J222557+601148: Not a Young Galactic Supernova Remnant". The Astronomical Journal. 139 (6): 2595–2599. arXiv:1004.3293. Bibcode:2010AJ....139.2595F. doi:10.1088/0004-6256/139/6/2595. S2CID 119186785.
