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- Andromeda_XXI abstract "Andromeda XXI (And 21, And XXI) is a moderately bright dwarf spheroidal galaxy about 859 ± 51 kiloparsecs (2.80 ± 0.17 Mly) away from the Sun in the constellation Andromeda. It is the fourth largest Local Group dwarf spheroidal galaxy.This large satellite of the Andromeda Galaxy (M31) has a half-light radius of nearly 1 kpc.The discovery arose from the first year data of a photometric survey of the M31/M33 subgroupings of the Local Group by the Pan-Andromeda Archaeological Survey (PAndAS). This survey was conducted with the Megaprime/MegaCam wide-field camera mounted on the Canada-France-Hawaii Telescope.Andromeda XXI appears as a spatial overdensity of stars. It has red giant branches at the distance of M31/M33, and follows metal-poor, [Fe/H]=-1.8 when plotted in a color-magnitude diagram.Although moderately bright (MV=-9.9+/-0.6), it has low surface brightness. This indicates that numerous relatively luminous M31 satellites remain undiscovered.".
- Andromeda_XXI wikiPageID "31365813".
- Andromeda_XXI wikiPageRevisionID "564249080".
- Andromeda_XXI appmagV "9.9".
- Andromeda_XXI constellationName Andromeda_(constellation).
- Andromeda_XXI hasPhotoCollection Andromeda_XXI.
- Andromeda_XXI name "Andromeda XXI".
- Andromeda_XXI names "Andromeda XXI , And XXI , And 21".
- Andromeda_XXI notes Satellite_galaxy.
- Andromeda_XXI notes "of Andromeda".
- Andromeda_XXI type "dSph".
- Andromeda_XXI subject Category:Andromeda_(constellation).
- Andromeda_XXI subject Category:Andromeda_Subgroup.
- Andromeda_XXI subject Category:Dwarf_spheroidal_galaxies.
- Andromeda_XXI type Abstraction100002137.
- Andromeda_XXI type Collection107951464.
- Andromeda_XXI type DwarfSpheroidalGalaxies.
- Andromeda_XXI type Galaxy108270938.
- Andromeda_XXI type Group100031264.
- Andromeda_XXI type CelestialBody.
- Andromeda_XXI type Galaxy.
- Andromeda_XXI type PhysicalBody.
- Andromeda_XXI comment "Andromeda XXI (And 21, And XXI) is a moderately bright dwarf spheroidal galaxy about 859 ± 51 kiloparsecs (2.80 ± 0.17 Mly) away from the Sun in the constellation Andromeda. It is the fourth largest Local Group dwarf spheroidal galaxy.This large satellite of the Andromeda Galaxy (M31) has a half-light radius of nearly 1 kpc.The discovery arose from the first year data of a photometric survey of the M31/M33 subgroupings of the Local Group by the Pan-Andromeda Archaeological Survey (PAndAS).".
- Andromeda_XXI label "Andromeda XXI".
- Andromeda_XXI label "Andromeda XXI".
- Andromeda_XXI label "Андромеда XXI".
- Andromeda_XXI sameAs Andromeda_XXI.
- Andromeda_XXI sameAs m.0gkxnzd.
- Andromeda_XXI sameAs Q587807.
- Andromeda_XXI sameAs Q587807.
- Andromeda_XXI sameAs Andromeda_XXI.
- Andromeda_XXI wasDerivedFrom Andromeda_XXI?oldid=564249080.
- Andromeda_XXI isPrimaryTopicOf Andromeda_XXI.
- Andromeda_XXI name "Andromeda XXI , And XXI , And 21".
- Andromeda_XXI name "Andromeda XXI".