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- Leo_A abstract "Leo A ( also known as Leo III ) is an irregular galaxy that is part of the Local Group. It lies 2.25 million light-years from Earth. This galaxy was discovered by Fritz Zwicky in 1942. The estimated mass of this galaxy is (8.0 ± 2.7) × 107 solar masses, with at least 80% consisting of an unknown dark matter. It is one of the most isolated galaxies in the local group and shows no indications of an interaction or merger for several billion years. The presence of RR Lyrae variables shows that the galaxy has an old stellar population that is up to 10 billion years in age.The neutral hydrogen in this galaxy occupies in a volume similar to its optical extent, and is distributed in a squashed, uneven ring. The galaxy is not rotating and the hydrogen is moving about in random clumps. The proportion of elements with higher atomic numbers than helium is only about 1-2% of the ratio in the Sun. This indicates a much lower rate of stellar evolution than in the Milky Way galaxy. The Leo A galaxy shows sign of increased star formation some time within the last billion years, although the current level is low. There are four H II regions powered by short-lived, O-class stars.".
- Leo_A thumbnail Leo_A_Hubble_WikiSky.jpg?width=300.
- Leo_A wikiPageID "1861998".
- Leo_A wikiPageRevisionID "597078530".
- Leo_A appmagV "12.9".
- Leo_A caption "Leo A by Hubble Space Telescope".
- Leo_A constellationName Leo_(constellation).
- Leo_A distLy "2.25".
- Leo_A epoch Epoch_(astronomy).
- Leo_A hasPhotoCollection Leo_A.
- Leo_A name "Leo A".
- Leo_A names "Leo III, UGC 5364, DDO 69, PGC 28868".
- Leo_A sizeV "5".
- Leo_A type "IBm".
- Leo_A z "24".
- Leo_A subject Category:Dwarf_galaxies.
- Leo_A subject Category:Irregular_galaxies.
- Leo_A subject Category:Leo_(constellation).
- Leo_A subject Category:Local_Group.
- Leo_A subject Category:PGC_objects.
- Leo_A subject Category:UGC_objects.
- Leo_A type Abstraction100002137.
- Leo_A type Collection107951464.
- Leo_A type DwarfGalaxies.
- Leo_A type Galaxy108270938.
- Leo_A type Group100031264.
- Leo_A type IrregularGalaxies.
- Leo_A type CelestialBody.
- Leo_A type Galaxy.
- Leo_A type PhysicalBody.
- Leo_A comment "Leo A ( also known as Leo III ) is an irregular galaxy that is part of the Local Group. It lies 2.25 million light-years from Earth. This galaxy was discovered by Fritz Zwicky in 1942. The estimated mass of this galaxy is (8.0 ± 2.7) × 107 solar masses, with at least 80% consisting of an unknown dark matter. It is one of the most isolated galaxies in the local group and shows no indications of an interaction or merger for several billion years.".
- Leo_A label "Leo A".
- Leo_A label "Leo A".
- Leo_A label "Leo A".
- Leo_A label "Leo A".
- Leo_A label "Leo A".
- Leo_A label "Leo A".
- Leo_A label "Лев A".
- Leo_A label "しし座A".
- Leo_A label "獅子座A".
- Leo_A sameAs Leo_A.
- Leo_A sameAs Leo_A.
- Leo_A sameAs Leo_A.
- Leo_A sameAs しし座A.
- Leo_A sameAs Leo_A.
- Leo_A sameAs Leo_A.
- Leo_A sameAs m.061xg_.
- Leo_A sameAs Q587930.
- Leo_A sameAs Q587930.
- Leo_A sameAs Leo_A.
- Leo_A wasDerivedFrom Leo_A?oldid=597078530.
- Leo_A depiction Leo_A_Hubble_WikiSky.jpg.
- Leo_A isPrimaryTopicOf Leo_A.
- Leo_A name "Leo A".
- Leo_A name "Leo III, UGC 5364, DDO 69, PGC 28868".
