Matches in DBpedia 2014 for { <http://dbpedia.org/resource/Subdwarf_B_star> ?p ?o. }
Showing items 1 to 33 of
33
with 100 items per page.
- Subdwarf_B_star abstract "A subdwarf B star is a kind of subdwarf star with spectral type B. They differ from the typical subdwarf star by being much hotter and brighter. They are situated at the "extreme horizontal branch" of the Hertzsprung–Russell diagram. Masses of these stars are around 0.5 solar masses, and they contain only about 1% hydrogen, with the rest being helium. Their radius is from 0.15 to 0.25 solar radii, and their temperature is from 20000 to 40000K.These stars represent a late stage in the evolution of some stars, caused when a red giant star loses its outer hydrogen layers before the core begins to fuse helium. The reasons why this premature mass loss occurs are unclear, but the interaction of stars in a binary star system is thought to be one of the main mechanisms. Single subdwarfs may be the result of a merger of two white dwarf stars. The sdB stars are expected to become white dwarfs without going through any more giant stages.Subdwarf B stars, being more luminous than white dwarfs, are a significant component in the hot star population of old stellar systems, such as globular clusters, spiral galaxy bulges and elliptical galaxies. They are prominent on ultraviolet images. The hot subdwarfs are proposed to be the cause of the UV-upturn in the light output of elliptical galaxies.".
- Subdwarf_B_star thumbnail Subdwarf_B_star_schematic_cross_section.png?width=300.
- Subdwarf_B_star wikiPageID "15056480".
- Subdwarf_B_star wikiPageRevisionID "594971816".
- Subdwarf_B_star hasPhotoCollection Subdwarf_B_star.
- Subdwarf_B_star subject Category:Star_types.
- Subdwarf_B_star subject Category:Subdwarf_stars.
- Subdwarf_B_star type CelestialBody109239740.
- Subdwarf_B_star type NaturalObject100019128.
- Subdwarf_B_star type Object100002684.
- Subdwarf_B_star type PhysicalEntity100001930.
- Subdwarf_B_star type Star109444100.
- Subdwarf_B_star type SubdwarfStars.
- Subdwarf_B_star type Whole100003553.
- Subdwarf_B_star comment "A subdwarf B star is a kind of subdwarf star with spectral type B. They differ from the typical subdwarf star by being much hotter and brighter. They are situated at the "extreme horizontal branch" of the Hertzsprung–Russell diagram. Masses of these stars are around 0.5 solar masses, and they contain only about 1% hydrogen, with the rest being helium.".
- Subdwarf_B_star label "B型次矮星".
- Subdwarf_B_star label "B型準矮星".
- Subdwarf_B_star label "Estrela subanã B".
- Subdwarf_B_star label "Estrella subenana de tipo B".
- Subdwarf_B_star label "Gorący podkarzeł".
- Subdwarf_B_star label "Subdwarf B star".
- Subdwarf_B_star sameAs Estrella_subenana_de_tipo_B.
- Subdwarf_B_star sameAs B型準矮星.
- Subdwarf_B_star sameAs 준왜성_B.
- Subdwarf_B_star sameAs Gorący_podkarzeł.
- Subdwarf_B_star sameAs Estrela_subanã_B.
- Subdwarf_B_star sameAs m.03h64k0.
- Subdwarf_B_star sameAs Q1207898.
- Subdwarf_B_star sameAs Q1207898.
- Subdwarf_B_star sameAs Subdwarf_B_star.
- Subdwarf_B_star wasDerivedFrom Subdwarf_B_star?oldid=594971816.
- Subdwarf_B_star depiction Subdwarf_B_star_schematic_cross_section.png.
- Subdwarf_B_star isPrimaryTopicOf Subdwarf_B_star.
