Andromeda XIX

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Andromeda XIX is a satellite galaxy of the Andromeda Galaxy, and is part of the Local Group, like the Milky Way Galaxy.[1] Andromeda XIX is said to be "the most extended dwarf galaxy known in the Local Group",[2] and has a half-light radius of 1.7 kiloparsec (kpc).[2] It was found by the Canada–France–Hawaii Telescope, and it is a dwarf galaxy.

History[change | change source]

The MegaPrime/MegaCam 1 deg2 (camera) on the Canada-France-Hawaii Telescope (CFHT) had mapped the M31 stellar halo (one quarter) up to ~150 kpc.[3] The observation, which had proved the uneveness of Andromeda's stellar halo, had shown that multiple other dwarf galaxies exist.[3] They are: Andromeda XI, XII, XIII, XV, XVI, XVIII, XIX, and XX.[3]

Related pages[change | change source]

References[change | change source]

  1. "Chart (Local Galaxies)". University of Northern Iowa. Retrieved 18 April 2012.
  2. 2.0 2.1 McConnachie, Alan W.; et al. (2008). "A trio of new local group galaxies with extreme properties". The Astrophysical Journal. 688 (2): 1009–1020. arXiv:0806.3988. doi:10.1086/591313. S2CID 16950090.
  3. 3.0 3.1 3.2 Martin, Nicolas F.; et al. (2009). "PAndAS' cubs: Discovery of two new dwarf galaxies in the surroundings of the Andromeda and Triangulum galaxies". The Astrophysical Journal. 705 (1): 758–765. arXiv:0909.0399. doi:10.1088/0004-637X/705/1/758. S2CID 15277245.