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- Dwarf_galaxy_problem abstract "The dwarf galaxy problem, also known as the missing satellites problem, arises from numerical cosmological simulations that predict the evolution of the distribution of matter in the universe. Dark matter seems to cluster hierarchically and in ever increasing number counts for smaller-and-smaller-sized halos. However, although there seem to be enough observed normal-sized galaxies to account for this distribution, the number of dwarf galaxies is orders of magnitude lower than expected from simulation. For comparison, there were observed to be around 38 dwarf galaxies in the Local Group, and only around 11 orbiting the Milky Way, (for a detailed and more up to date list see List of Milky Way's satellite galaxies) yet one dark matter simulation predicted around 500 Milky Way dwarf satellites.This problem has two potential solutions. One is that the smaller halos do exist but only a few of them end up becoming visible because they have not been able to attract enough baryonic matter to create a visible dwarf galaxy. In support of this, Keck observations in 2007 of eight newly discovered ultra-faint Milky Way dwarf satellites showed that six were around 99.9% dark matter (with a mass-to-light ratio of about 1000). Other solutions may be that dwarf galaxies tend to be merged into or tidally stripped apart by larger galaxies due to complex interactions. This tidal stripping has been part of the problem in identifying dwarf galaxies in the first place, which is an extremely difficult task since these objects have low surface brightness and are highly diffused, so much that they are virtually unnoticeable.".
- Dwarf_galaxy_problem thumbnail A_galactic_nursery.jpg?width=300.
- Dwarf_galaxy_problem wikiPageExternalLink 060521_dwarf_galaxy.html.
- Dwarf_galaxy_problem wikiPageID "954234".
- Dwarf_galaxy_problem wikiPageLength "4204".
- Dwarf_galaxy_problem wikiPageOutDegree "24".
- Dwarf_galaxy_problem wikiPageRevisionID "674333562".
- Dwarf_galaxy_problem wikiPageWikiLink Baryon.
- Dwarf_galaxy_problem wikiPageWikiLink Baryonic_matter.
- Dwarf_galaxy_problem wikiPageWikiLink Category:Dark_matter.
- Dwarf_galaxy_problem wikiPageWikiLink Category:Galaxies.
- Dwarf_galaxy_problem wikiPageWikiLink Category:Large-scale_structure_of_the_cosmos.
- Dwarf_galaxy_problem wikiPageWikiLink Cold_dark_matter.
- Dwarf_galaxy_problem wikiPageWikiLink Cuspy_halo_problem.
- Dwarf_galaxy_problem wikiPageWikiLink Dark_galaxy.
- Dwarf_galaxy_problem wikiPageWikiLink Dark_matter.
- Dwarf_galaxy_problem wikiPageWikiLink Dwarf_galaxy.
- Dwarf_galaxy_problem wikiPageWikiLink Galactic_halo.
- Dwarf_galaxy_problem wikiPageWikiLink Galaxy.
- Dwarf_galaxy_problem wikiPageWikiLink List_of_Milky_Ways_satellite_galaxies.
- Dwarf_galaxy_problem wikiPageWikiLink List_of_satellite_galaxies_of_the_Milky_Way.
- Dwarf_galaxy_problem wikiPageWikiLink List_of_unsolved_problems_in_physics.
- Dwarf_galaxy_problem wikiPageWikiLink Local_Group.
- Dwarf_galaxy_problem wikiPageWikiLink Mass-to-light_ratio.
- Dwarf_galaxy_problem wikiPageWikiLink Matter.
- Dwarf_galaxy_problem wikiPageWikiLink Milky_Way.
- Dwarf_galaxy_problem wikiPageWikiLink Order_of_magnitude.
- Dwarf_galaxy_problem wikiPageWikiLink Orders_of_magnitude.
- Dwarf_galaxy_problem wikiPageWikiLink Physical_cosmology.
- Dwarf_galaxy_problem wikiPageWikiLink Simulation.
- Dwarf_galaxy_problem wikiPageWikiLink Tidal_force.
- Dwarf_galaxy_problem wikiPageWikiLink Universe.
- Dwarf_galaxy_problem wikiPageWikiLink W._M._Keck_Observatory.
- Dwarf_galaxy_problem wikiPageWikiLink File:A_galactic_nursery.jpg.
- Dwarf_galaxy_problem wikiPageWikiLinkText "Dwarf galaxy problem".
- Dwarf_galaxy_problem wikiPageWikiLinkText "dwarf galaxy problem".
- Dwarf_galaxy_problem wikiPageWikiLinkText "missing satellite problem".
- Dwarf_galaxy_problem hasPhotoCollection Dwarf_galaxy_problem.
- Dwarf_galaxy_problem wikiPageUsesTemplate Template:Cite_arXiv.
- Dwarf_galaxy_problem wikiPageUsesTemplate Template:Dark_matter.
- Dwarf_galaxy_problem wikiPageUsesTemplate Template:Reflist.
- Dwarf_galaxy_problem subject Category:Dark_matter.
- Dwarf_galaxy_problem subject Category:Galaxies.
- Dwarf_galaxy_problem subject Category:Large-scale_structure_of_the_cosmos.
- Dwarf_galaxy_problem type Object.
- Dwarf_galaxy_problem type Physic.
- Dwarf_galaxy_problem comment "The dwarf galaxy problem, also known as the missing satellites problem, arises from numerical cosmological simulations that predict the evolution of the distribution of matter in the universe. Dark matter seems to cluster hierarchically and in ever increasing number counts for smaller-and-smaller-sized halos.".
- Dwarf_galaxy_problem label "Dwarf galaxy problem".
- Dwarf_galaxy_problem sameAs Problema_de_les_galàxies_nanes.
- Dwarf_galaxy_problem sameAs مسئله_کهکشان_کوتوله.
- Dwarf_galaxy_problem sameAs Problème_des_galaxies_naines.
- Dwarf_galaxy_problem sameAs m.03t0tb.
- Dwarf_galaxy_problem sameAs Q3406262.
- Dwarf_galaxy_problem sameAs Q3406262.
- Dwarf_galaxy_problem wasDerivedFrom Dwarf_galaxy_problem?oldid=674333562.
- Dwarf_galaxy_problem depiction A_galactic_nursery.jpg.
- Dwarf_galaxy_problem isPrimaryTopicOf Dwarf_galaxy_problem.
