NGC 7048

NGC 7048
Emission nebula
Planetary nebula
Observation data: J2000 epoch
Right ascension 24h 14m 15.25s[1]
Declination +46° 17′ 16.1″[1]
Distance 5260 ly   (1613[2] pc)
Apparent magnitude (V) 12.1[3]
Apparent diameter 1.02′
Constellation Cygnus
Designations PK 088-01 1, PN ARO 41, IRAS 21124+4604

NGC 7048 is a planetary nebula in the constellation of Cygnus. The bright star to the lower left of the nebula is a magnitude 10.5 star, designated TYC 3589-4652-1. The nebula is slightly brighter along the west and east sides.[4] This planetary nebula has an apparent magnitude of 12.1. NGC 7048 was discovered by Édouard Stephan on 19 October 1878 using a 31.5-inch reflector.[5]

The central star of NGC 7048 is though to be a white dwarf. The planetary nebula itself has an elliptical shape; from its low surface brightness it is thought to be highly evolved.[4]

References

  1. 1 2 Massaro, F.; Giroletti, M.; d'Abrusco, R.; Masetti, N.; Paggi, A.; Cowperthwaite, Philip S.; Tosti, G.; Funk, S. (2014). "The Low-Frequency Radio Catalog of Flat-Spectrum Sources". The Astrophysical Journal Supplement Series. 213: 3. arXiv:1503.03483. Bibcode:2014ApJS..213....3M. doi:10.1088/0067-0049/213/1/3.
  2. ↑ Stanghellini, Letizia; Shaw, Richard A.; Villaver, Eva (2008). "The Magellanic Cloud Calibration of the Galactic Planetary Nebula Distance Scale". The Astrophysical Journal. 689: 194. arXiv:0807.1129. Bibcode:2008ApJ...689..194S. doi:10.1086/592395.
  3. ↑ "Revised NGC Data for NGC 7048 - Hartmut Frommert - SEDS". seds.org. Retrieved 14 March 2017.
  4. 1 2 Davis, Christopher J.; Smith, Michael D.; Stern, Luke; Kerr, Thomas H.; Chiar, Jean E. (2003). "Near-infrared spectroscopy of (proto)-planetary nebulae: Molecular hydrogen excitation as an evolutionary tracer". Monthly Notices of the Royal Astronomical Society. 344: 262. Bibcode:2003MNRAS.344..262D. doi:10.1046/j.1365-8711.2003.06820.x.
  5. ↑ Seligman, Courtney. "New General Catalogue objects: NGC 7000 - 7049". cseligman.com. Retrieved 14 March 2017.
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