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planetary nebulae

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  • List of planetary nebulae — The following is a list of major planetary nebulae. NotesData values are sourced from the individual articles for each nebula. Please see the article of the nebula in question for data references.Many distances are estimates (denoted by the… …   Wikipedia

  • Catalogue of Galactic Planetary Nebulae — Saltar a navegación, búsqueda El Catalogue of Galactic Planetary Nebulae (Version 2000), Catálogo de Nebulosas Planetarias Galácticas en inglés, es un catálogo astronómico de nebulosas planetarias (PNe) que aparece en el Abhandlungen aus der… …   Wikipedia Español

  • Planetary nebula luminosity function — (PNLF) is a secondary distance indicator used in astronomy. It makes use of the [O III| [O III] λ5007 forbidden line found in all planetary nebula which are members of the old stellar populations (Population… …   Wikipedia

  • Planetary nebula — A planetary nebula is an emission nebula consisting of a glowing shell of gas and plasma formed by certain types of stars when they die. The name originated in the 18th century because of their similarity in appearance to giant planets when… …   Wikipedia

  • Planetary Nebula M2-9 — For other uses of Butterfly Nebula , see Butterfly Nebula (disambiguation). Minkowski 2 9 (M2 9) Observation data (Epoch J2000) …   Wikipedia

  • planetary nebula — Astron. an expanding shell of thin ionized gas that is ejected from and surrounds a hot, dying star of about the same mass as the sun; the gas absorbs ultraviolet radiation from the central star and reemits it as visible light by the process of… …   Universalium

  • A Catalogue of Nebulae and Clusters of Stars in the Southern Hemisphere observed in New South Wales — Ein astronomischer Katalog ist eine Liste von astronomischen Objekten, die aufgrund gemeinsamer Eigenschaften, wie Morphologie oder Entdeckungsmethode gruppiert werden. Astronomische Kataloge sind üblicherweise das Ergebnis einer astronomischen… …   Deutsch Wikipedia

  • List of protoplanetary nebulae — ee also* List of planetary nebulae * Nebula * Protoplanetary nebula * …   Wikipedia

  • Stars and planetary systems in fiction — The planetary systems of stars other than the Sun and the Solar System are a staple element in much science fiction. Contents 1 Overview 1.1 The brightest stars …   Wikipedia

  • Nebula — Nebulae redirects here. For the supercomputer in China, see Nebulae (computer). For other uses, see Nebula (disambiguation). The Pillars of Creation from the Eagle Nebula …   Wikipedia

  • Abell 39 — Planetary nebula caption= Credit: WIYN/NOAO/NSF name = Abell 39 type = epoch = J2000 ra = RA|16|27|33.737Harvnb|SIMBAD|2008] dec = DEC|+27|54|33.44 dist ly = 6.8 kly (2.1 kpc) appmag v = Integrated: 13.7; Central Star: 15.5 ± 0.2 size v = 155… …   Wikipedia

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