NGC 7048: Difference between revisions
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'''NGC 7048''' is a [[planetary nebula]] in the [[constellation]] of [[Cygnus (constellation)|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.<ref name=Davis/> 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.<ref name=cseligman>{{cite web|url=http://cseligman.com/text/atlas/ngc70.htm#7048|title=New General Catalogue objects: NGC 7000 - 7049|author=Seligman, Courtney|website=cseligman.com|accessdate=14 March 2017<!--Happy Pi Day Everyone-->}}</ref> |
'''NGC 7048''' is a [[planetary nebula]] in the [[constellation]] of [[Cygnus (constellation)|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.<ref name=Davis/> 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.<ref name=cseligman>{{cite web|url=http://cseligman.com/text/atlas/ngc70.htm#7048|title=New General Catalogue objects: NGC 7000 - 7049|author=Seligman, Courtney|website=cseligman.com|accessdate=14 March 2017<!--Happy Pi Day Everyone-->}}</ref> |
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The central star of NGC 7048 is |
The central star of NGC 7048 is thought 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.<ref name=Davis>{{cite journal|doi=10.1046/j.1365-8711.2003.06820.x|title=Near-infrared spectroscopy of (proto)-planetary nebulae: Molecular hydrogen excitation as an evolutionary tracer|journal=Monthly Notices of the Royal Astronomical Society|volume=344|issue=1|pages=262–282|year=2003|last1=Davis|first1=Christopher J.|last2=Smith|first2=Michael D.|last3=Stern|first3=Luke|last4=Kerr|first4=Thomas H.|last5=Chiar|first5=Jean E.|bibcode = 2003MNRAS.344..262D }}</ref> |
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==References== |
==References== |
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Revision as of 15:19, 1 November 2019
| 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 thought 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
- ^ a b 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 (1): 3. arXiv:1503.03483. Bibcode:2014ApJS..213....3M. doi:10.1088/0067-0049/213/1/3.
- ^ Stanghellini, Letizia; Shaw, Richard A.; Villaver, Eva (2008). "The Magellanic Cloud Calibration of the Galactic Planetary Nebula Distance Scale". The Astrophysical Journal. 689 (1): 194–202. arXiv:0807.1129. Bibcode:2008ApJ...689..194S. doi:10.1086/592395.
- ^ "Revised NGC Data for NGC 7048 - Hartmut Frommert - SEDS". seds.org. Retrieved 14 March 2017.
- ^ a b 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 (1): 262–282. Bibcode:2003MNRAS.344..262D. doi:10.1046/j.1365-8711.2003.06820.x.
- ^ Seligman, Courtney. "New General Catalogue objects: NGC 7000 - 7049". cseligman.com. Retrieved 14 March 2017.
External links
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