Matches in DBpedia 2016-04 for { <http://dbpedia.org/resource/O-type_star> ?p ?o }
- O-type_star abstract "An O-type star is a hot, blue-white star of spectral type O in the Yerkes classification system employed by astronomers. They have temperatures in excess of 30,000 Kelvin (K) and so appear to the left on the Hertzsprung–Russell diagram. Stars of this type are identified by their dominant Helium II absorption lines, strong lines of other ionised elements, and Hydrogen and neutral He lines weaker than spectral type B.Stars of this type are particularly rare; only 0.00003% of the main sequence are O-type stars. However, because they are usually very bright, they can be seen when further away than dimmer stars, and two of the 90 brightest stars as seen from Earth are O type. Due to high temperature and luminosity, O-type stars end their lives rather quickly in violent supernova explosions, resulting in black holes or neutron stars. Most of these stars are young massive main sequence, giant, or supergiant stars, but the central stars of planetary nebulae, old low-mass stars near the end of their lives, also usually have O spectra.O-type stars are typically located in regions of active star formation, such as the spiral arms of a spiral galaxy. These stars illuminate any surrounding material and are largely responsible for the distinct coloration of a galaxy's arms. Furthermore, O-type stars are frequently in multiple star systems where their evolution is more difficult to predict due to mass transfer and the possibility of component stars going supernova at different times.".
- O-type_star thumbnail Morgan-Keenan_spectral_classification.png?width=300.
- O-type_star wikiPageID "39143566".
- O-type_star wikiPageLength "23789".
- O-type_star wikiPageOutDegree "102".
- O-type_star wikiPageRevisionID "706617438".
- O-type_star wikiPageWikiLink 10_Lacertae.
- O-type_star wikiPageWikiLink AE_Aurigae.
- O-type_star wikiPageWikiLink Alnitak.
- O-type_star wikiPageWikiLink Alpha_Camelopardalis.
- O-type_star wikiPageWikiLink Astronomer.
- O-type_star wikiPageWikiLink Asymptotic_giant_branch.
- O-type_star wikiPageWikiLink Atmosphere.
- O-type_star wikiPageWikiLink BI_253.
- O-type_star wikiPageWikiLink Black_hole.
- O-type_star wikiPageWikiLink Blue_loop.
- O-type_star wikiPageWikiLink CNO_cycle.
- O-type_star wikiPageWikiLink Category:O-type_stars.
- O-type_star wikiPageWikiLink Category:Star_types.
- O-type_star wikiPageWikiLink Circumstellar_habitable_zone.
- O-type_star wikiPageWikiLink Convection.
- O-type_star wikiPageWikiLink Corona.
- O-type_star wikiPageWikiLink Cygnus_X-1.
- O-type_star wikiPageWikiLink Delta_Circini.
- O-type_star wikiPageWikiLink Disc_(galaxy).
- O-type_star wikiPageWikiLink Elephants_Trunk_nebula.
- O-type_star wikiPageWikiLink Eskimo_Nebula.
- O-type_star wikiPageWikiLink HD_49798.
- O-type_star wikiPageWikiLink HD_93205.
- O-type_star wikiPageWikiLink Helium.
- O-type_star wikiPageWikiLink Hertzsprung–Russell_diagram.
- O-type_star wikiPageWikiLink Horizontal_branch.
- O-type_star wikiPageWikiLink Hypergiant.
- O-type_star wikiPageWikiLink IC_418.
- O-type_star wikiPageWikiLink Iota_Orionis.
- O-type_star wikiPageWikiLink Kelvin.
- O-type_star wikiPageWikiLink LH54-425.
- O-type_star wikiPageWikiLink List_of_brightest_stars.
- O-type_star wikiPageWikiLink Luminous_blue_variable.
- O-type_star wikiPageWikiLink Main_sequence.
- O-type_star wikiPageWikiLink Meissa.
- O-type_star wikiPageWikiLink Metallicity.
- O-type_star wikiPageWikiLink Mintaka.
- O-type_star wikiPageWikiLink Molecular_cloud.
- O-type_star wikiPageWikiLink Mu_Columbae.
- O-type_star wikiPageWikiLink NGC_6826.
- O-type_star wikiPageWikiLink Nanometre.
- O-type_star wikiPageWikiLink Neutron_star.
- O-type_star wikiPageWikiLink Nitrogen.
- O-type_star wikiPageWikiLink Nuclear_fusion.
- O-type_star wikiPageWikiLink Open_cluster.
- O-type_star wikiPageWikiLink Photoevaporation.
- O-type_star wikiPageWikiLink Photosphere.
- O-type_star wikiPageWikiLink Planetary_nebula.
- O-type_star wikiPageWikiLink Plasketts_star.
- O-type_star wikiPageWikiLink Protoplanetary_nebula.
- O-type_star wikiPageWikiLink Radiation.
- O-type_star wikiPageWikiLink Radiation_zone.
- O-type_star wikiPageWikiLink Red_giant.
- O-type_star wikiPageWikiLink Red_supergiant.
- O-type_star wikiPageWikiLink Sigma_Orionis.
- O-type_star wikiPageWikiLink Silicon.
- O-type_star wikiPageWikiLink Solar_core.
- O-type_star wikiPageWikiLink Spectral_line.
- O-type_star wikiPageWikiLink Spiral_galaxy.
- O-type_star wikiPageWikiLink Star.
- O-type_star wikiPageWikiLink Star_formation.
- O-type_star wikiPageWikiLink Star_system.
- O-type_star wikiPageWikiLink Stellar_classification.
- O-type_star wikiPageWikiLink Stellar_kinematics.
- O-type_star wikiPageWikiLink Stellar_wind.
- O-type_star wikiPageWikiLink Subdwarf.
- O-type_star wikiPageWikiLink Subdwarf_O_star.
- O-type_star wikiPageWikiLink Supernova.
- O-type_star wikiPageWikiLink Tau_Canis_Majoris.
- O-type_star wikiPageWikiLink Theta1_Orionis_C.
- O-type_star wikiPageWikiLink UW_Canis_Majoris.
- O-type_star wikiPageWikiLink Ultraviolet.
- O-type_star wikiPageWikiLink VFTS_102.
- O-type_star wikiPageWikiLink Visible_spectrum.
- O-type_star wikiPageWikiLink White_dwarf.
- O-type_star wikiPageWikiLink Wolf–Rayet_star.
- O-type_star wikiPageWikiLink Xi_Persei.
- O-type_star wikiPageWikiLink Yellow_hypergiant.
- O-type_star wikiPageWikiLink Zeta_Ophiuchi.
- O-type_star wikiPageWikiLink Zeta_Puppis.
- O-type_star wikiPageWikiLink File:CNO_Cycle.svg.
- O-type_star wikiPageWikiLink File:Cep_B_labeled.jpg.
- O-type_star wikiPageWikiLink File:M20_nebula.jpg.
- O-type_star wikiPageWikiLink File:Morgan-Keenan_spectral_classification.png.
- O-type_star wikiPageWikiLink File:NGC_6826HSTFull.jpg.
- O-type_star wikiPageWikiLink File:Ngc2024_2mass.jpg.
- O-type_star wikiPageWikiLink File:Star_types.svg.
- O-type_star wikiPageWikiLink File:Subdwarf_O_star_schematic_cross_section.png.
- O-type_star wikiPageWikiLink File:Trapezium_cluster_optical_and_infrared_comparison.jpg.
- O-type_star wikiPageWikiLink File:Zams_and_tracks.png.
- O-type_star wikiPageWikiLinkText "Massive stars".
- O-type_star wikiPageWikiLinkText "O class stars".
- O-type_star wikiPageWikiLinkText "O".
- O-type_star wikiPageWikiLinkText "O-".