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- Dwarf_spheroidal_galaxy abstract "Dwarf spheroidal galaxy (dSph) is a term in astronomy applied to low luminosity galaxies that are companions to the Milky Way and to the similar systems that are companions to the Andromeda Galaxy (M31). While similar to dwarf elliptical galaxies in appearance and properties such as little to no gas or dust or recent star formation, they are approximately spheroidal in shape, generally lower luminosity, and are recognized only as satellite galaxies in the Local Group.While there were nine "classical" dSph galaxies discovered up until 2005, the Sloan Digital Sky Survey has resulted in the discovery of 11 more dSph galaxies—this has radically changed the understanding of these galaxies by providing a much larger sample to study.Recently, as growing evidence has indicated that the vast majority of dwarf ellipticals have properties that are not at all similar to elliptical galaxies, but are closer to irregular and late-type spiral galaxies, this term has been used to refer to all of the galaxies that share the properties of those above. These sorts of galaxies may in fact be the most common type of galaxies in the universe, but are much harder to see than other types of galaxies because they are so faint.Because of the faintness of the lowest luminosity dwarf spheroidals and the nature of the stars contained within them, some astronomers suggest that dwarf spheroidals and globular clusters may not be clearly separate and distinct types of objects. Other recent studies, however, have found a distinction in that the total amount of mass inferred from the motions of stars in dwarf spheroidals is many times that which can be accounted for by the mass of the stars themselves. In the current predominantly accepted Cold Dark Matter cosmology, this is seen as a sure sign of dark matter, and the presence of dark matter is often cited as a reason to classify dwarf spheroidals as a different class of object from globular clusters (which show little to no signs of dark matter). Because of the extremely large amounts of dark matter in these objects, they may deserve the title "most dark matter-dominated galaxies"".
- Dwarf_spheroidal_galaxy thumbnail NGC147.jpg?width=300.
- Dwarf_spheroidal_galaxy wikiPageExternalLink review.html.
- Dwarf_spheroidal_galaxy wikiPageExternalLink some-galaxies-are-made-almost-entirely-of-dark-matter.
- Dwarf_spheroidal_galaxy wikiPageID "993396".
- Dwarf_spheroidal_galaxy wikiPageRevisionID "589374122".
- Dwarf_spheroidal_galaxy hasPhotoCollection Dwarf_spheroidal_galaxy.
- Dwarf_spheroidal_galaxy subject Category:Dwarf_elliptical_galaxies.
- Dwarf_spheroidal_galaxy subject Category:Dwarf_galaxies.
- Dwarf_spheroidal_galaxy subject Category:Dwarf_spheroidal_galaxies.
- Dwarf_spheroidal_galaxy subject Category:Elliptical_galaxies.
- Dwarf_spheroidal_galaxy subject Category:Galaxy_morphological_types.
- Dwarf_spheroidal_galaxy type Abstraction100002137.
- Dwarf_spheroidal_galaxy type Collection107951464.
- Dwarf_spheroidal_galaxy type DwarfEllipticalGalaxies.
- Dwarf_spheroidal_galaxy type DwarfGalaxies.
- Dwarf_spheroidal_galaxy type DwarfSpheroidalGalaxies.
- Dwarf_spheroidal_galaxy type EllipticalGalaxies.
- Dwarf_spheroidal_galaxy type Galaxy108270938.
- Dwarf_spheroidal_galaxy type Group100031264.
- Dwarf_spheroidal_galaxy comment "Dwarf spheroidal galaxy (dSph) is a term in astronomy applied to low luminosity galaxies that are companions to the Milky Way and to the similar systems that are companions to the Andromeda Galaxy (M31).".
- Dwarf_spheroidal_galaxy label "Dwarf spheroidal galaxy".
- Dwarf_spheroidal_galaxy label "Galassia nana sferoidale".
- Dwarf_spheroidal_galaxy label "Galaxia enana esferoidal".
- Dwarf_spheroidal_galaxy label "Galaxie naine sphéroïdale".
- Dwarf_spheroidal_galaxy label "Galáxia anã esferoidal".
- Dwarf_spheroidal_galaxy label "Karłowata galaktyka sferoidalna".
- Dwarf_spheroidal_galaxy label "Карликовая сфероидальная галактика".
- Dwarf_spheroidal_galaxy label "矮小楕円体銀河".
- Dwarf_spheroidal_galaxy label "矮橢球星系".
- Dwarf_spheroidal_galaxy sameAs Galaxia_enana_esferoidal.
- Dwarf_spheroidal_galaxy sameAs Galaxie_naine_sphéroïdale.
- Dwarf_spheroidal_galaxy sameAs Galassia_nana_sferoidale.
- Dwarf_spheroidal_galaxy sameAs 矮小楕円体銀河.
- Dwarf_spheroidal_galaxy sameAs 왜소_구형_은하.
- Dwarf_spheroidal_galaxy sameAs Karłowata_galaktyka_sferoidalna.
- Dwarf_spheroidal_galaxy sameAs Galáxia_anã_esferoidal.
- Dwarf_spheroidal_galaxy sameAs m.03xgmj.
- Dwarf_spheroidal_galaxy sameAs Q654754.
- Dwarf_spheroidal_galaxy sameAs Q654754.
- Dwarf_spheroidal_galaxy sameAs Dwarf_spheroidal_galaxy.
- Dwarf_spheroidal_galaxy wasDerivedFrom Dwarf_spheroidal_galaxy?oldid=589374122.
- Dwarf_spheroidal_galaxy depiction NGC147.jpg.
- Dwarf_spheroidal_galaxy isPrimaryTopicOf Dwarf_spheroidal_galaxy.