Matches in DBpedia 2016-04 for { <http://dbpedia.org/resource/Wolf–Rayet_star> ?p ?o }
- Wolf–Rayet_star abstract "Wolf–Rayet stars (often referred to as WR stars) are a heterogeneous set of stars with unusual spectra showing prominent broad emission lines of highly ionised helium and nitrogen or carbon. The spectra indicate very high surface temperatures of 30,000 K to around 200,000 K, surface enhancement of heavy elements, and strong stellar winds.Classic (or Population I) Wolf–Rayet stars are evolved, massive stars, O-type stars over 20 solar masses when they were on the main sequence, that have now completely lost their outer hydrogen and are fusing helium or heavier elements in the core. A subset of WR stars are the central stars of planetary nebulae (CSPNe), post Asymptotic Giant Branch stars that were similar to the Sun while on the main sequence, but have now ceased fusion and shed their atmospheres to show a bare carbon-oxygen core. Another group (type WNh) show hydrogen lines in their spectra and are young extremely massive stars still fusing hydrogen at the core, with nitrogen mixed to the surface and strong radiation-driven mass loss. They are all highly luminous due to their high temperatures, thousands of times the bolometric luminosity of the Sun (L☉) for the CSPNe, hundreds of thousands L☉ for the Population I WR stars, to over a million L☉ for the WNh stars, although not exceptionally bright visually since most of their radiation output is in the ultraviolet.The naked-eye stars Gamma Velorum and Theta Muscae, as well as the most massive known star, R136a1 in 30 Doradus, are all Wolf–Rayet stars.".
- Wolf–Rayet_star thumbnail A_cosmic_couple.jpg?width=300.
- Wolf–Rayet_star wikiPageExternalLink wrstars.html.
- Wolf–Rayet_star wikiPageExternalLink full.
- Wolf–Rayet_star wikiPageExternalLink index.php.
- Wolf–Rayet_star wikiPageExternalLink 0105wrstar.html.
- Wolf–Rayet_star wikiPageExternalLink wr104.html.
- Wolf–Rayet_star wikiPageID "229988".
- Wolf–Rayet_star wikiPageLength "71772".
- Wolf–Rayet_star wikiPageOutDegree "155".
- Wolf–Rayet_star wikiPageRevisionID "707837240".
- Wolf–Rayet_star wikiPageWikiLink AB7.
- Wolf–Rayet_star wikiPageWikiLink Absorption_band.
- Wolf–Rayet_star wikiPageWikiLink Andromeda_Galaxy.
- Wolf–Rayet_star wikiPageWikiLink Asymptotic_giant_branch.
- Wolf–Rayet_star wikiPageWikiLink Balmer_series.
- Wolf–Rayet_star wikiPageWikiLink Binary_star.
- Wolf–Rayet_star wikiPageWikiLink Black_hole.
- Wolf–Rayet_star wikiPageWikiLink Blue_supergiant.
- Wolf–Rayet_star wikiPageWikiLink Bolometer.
- Wolf–Rayet_star wikiPageWikiLink CD_Crucis.
- Wolf–Rayet_star wikiPageWikiLink CNO_cycle.
- Wolf–Rayet_star wikiPageWikiLink Carbon.
- Wolf–Rayet_star wikiPageWikiLink Category:Star_types.
- Wolf–Rayet_star wikiPageWikiLink Category:Wolf–Rayet_stars.
- Wolf–Rayet_star wikiPageWikiLink Charles_Wolf_(astronomer).
- Wolf–Rayet_star wikiPageWikiLink Compact_star.
- Wolf–Rayet_star wikiPageWikiLink Cosmic_dust.
- Wolf–Rayet_star wikiPageWikiLink Cygnus_(constellation).
- Wolf–Rayet_star wikiPageWikiLink Cygnus_X-1.
- Wolf–Rayet_star wikiPageWikiLink Doppler_broadening.
- Wolf–Rayet_star wikiPageWikiLink Eddington_luminosity.
- Wolf–Rayet_star wikiPageWikiLink Edward_Charles_Pickering.
- Wolf–Rayet_star wikiPageWikiLink Electromagnetic_radiation.
- Wolf–Rayet_star wikiPageWikiLink Engraved_Hourglass_Nebula.
- Wolf–Rayet_star wikiPageWikiLink Galactic_plane.
- Wolf–Rayet_star wikiPageWikiLink Gamma-ray_burst.
- Wolf–Rayet_star wikiPageWikiLink Gamma_Velorum.
- Wolf–Rayet_star wikiPageWikiLink Georges_Rayet.
- Wolf–Rayet_star wikiPageWikiLink Helium.
- Wolf–Rayet_star wikiPageWikiLink Henry_Draper_Catalogue.
- Wolf–Rayet_star wikiPageWikiLink Hertzsprung–Russell_diagram.
- Wolf–Rayet_star wikiPageWikiLink Hydrogen.
- Wolf–Rayet_star wikiPageWikiLink Hypernova.
- Wolf–Rayet_star wikiPageWikiLink International_Astronomical_Union.
- Wolf–Rayet_star wikiPageWikiLink Large_Magellanic_Cloud.
- Wolf–Rayet_star wikiPageWikiLink Latitude.
- Wolf–Rayet_star wikiPageWikiLink List_of_most_luminous_stars.
- Wolf–Rayet_star wikiPageWikiLink List_of_most_massive_stars.
- Wolf–Rayet_star wikiPageWikiLink Little_Ghost_Nebula.
- Wolf–Rayet_star wikiPageWikiLink Local_Group.
- Wolf–Rayet_star wikiPageWikiLink Luminosity.
- Wolf–Rayet_star wikiPageWikiLink Luminous_blue_variable.
- Wolf–Rayet_star wikiPageWikiLink Magellanic_Clouds.
- Wolf–Rayet_star wikiPageWikiLink Main_sequence.
- Wolf–Rayet_star wikiPageWikiLink Melnick_42.
- Wolf–Rayet_star wikiPageWikiLink Metallicity.
- Wolf–Rayet_star wikiPageWikiLink Milky_Way.
- Wolf–Rayet_star wikiPageWikiLink NGC_1501.
- Wolf–Rayet_star wikiPageWikiLink NGC_2371-2.
- Wolf–Rayet_star wikiPageWikiLink NGC_2452.
- Wolf–Rayet_star wikiPageWikiLink NGC_2867.
- Wolf–Rayet_star wikiPageWikiLink NGC_3603-A1.
- Wolf–Rayet_star wikiPageWikiLink NGC_40.
- Wolf–Rayet_star wikiPageWikiLink NGC_5189.
- Wolf–Rayet_star wikiPageWikiLink NGC_5315.
- Wolf–Rayet_star wikiPageWikiLink NGC_6751.
- Wolf–Rayet_star wikiPageWikiLink NGC_7026.
- Wolf–Rayet_star wikiPageWikiLink Nanometre.
- Wolf–Rayet_star wikiPageWikiLink Nitrogen.
- Wolf–Rayet_star wikiPageWikiLink Nova.
- Wolf–Rayet_star wikiPageWikiLink Nuclear_fusion.
- Wolf–Rayet_star wikiPageWikiLink O-type_main-sequence_star.
- Wolf–Rayet_star wikiPageWikiLink Oxygen.
- Wolf–Rayet_star wikiPageWikiLink PG_1159_star.
- Wolf–Rayet_star wikiPageWikiLink P_Cygni.
- Wolf–Rayet_star wikiPageWikiLink Paris_Observatory.
- Wolf–Rayet_star wikiPageWikiLink Photosphere.
- Wolf–Rayet_star wikiPageWikiLink Planetary_nebula.
- Wolf–Rayet_star wikiPageWikiLink R136a1.
- Wolf–Rayet_star wikiPageWikiLink Radiation_pressure.
- Wolf–Rayet_star wikiPageWikiLink Red_supergiant.
- Wolf–Rayet_star wikiPageWikiLink Right_ascension.
- Wolf–Rayet_star wikiPageWikiLink Silicon.
- Wolf–Rayet_star wikiPageWikiLink Small_Magellanic_Cloud.
- Wolf–Rayet_star wikiPageWikiLink Solar_mass.
- Wolf–Rayet_star wikiPageWikiLink Spectral_line.
- Wolf–Rayet_star wikiPageWikiLink Star.
- Wolf–Rayet_star wikiPageWikiLink Starburst_galaxy.
- Wolf–Rayet_star wikiPageWikiLink Stellar_classification.
- Wolf–Rayet_star wikiPageWikiLink Stellar_evolution.
- Wolf–Rayet_star wikiPageWikiLink Stellar_nucleosynthesis.
- Wolf–Rayet_star wikiPageWikiLink Stellar_population.
- Wolf–Rayet_star wikiPageWikiLink Stellar_wind.
- Wolf–Rayet_star wikiPageWikiLink Supernova.
- Wolf–Rayet_star wikiPageWikiLink Tarantula_Nebula.
- Wolf–Rayet_star wikiPageWikiLink Theta_Muscae.
- Wolf–Rayet_star wikiPageWikiLink Triangulum_Galaxy.
- Wolf–Rayet_star wikiPageWikiLink Triple-alpha_process.
- Wolf–Rayet_star wikiPageWikiLink Ultraviolet.