Andromeda XIX

Andromeda XIX is a satellite galaxy of the Andromeda Galaxy (M31), a member of the Local Group, like the Milky Way Galaxy.^[1] Andromeda XIX is considered "the most extended dwarf galaxy known in the Local Group",^[2] and has been shown to have a half-light radius of 1.7 kiloparsec (kpc).^[2] It was discovered by the Canada–France–Hawaii Telescope, and is thought to be a dwarf galaxy. It is located at RA 00^h 19^m 31^s DEC 35° 02′ 37″.

History

Surveillance performed during use of the MegaPrime/MegaCam 1 deg2 (camera) on the Canada-France-Hawaii Telescope (CFHT) had mapped M31 stellar halo (one quarter) up to ~150 kpc.^[3] The survey, which had confirmed the clumpiness of Andromeda's stellar halo, had shown the existence of multiple other dwarf galaxies.^[3] They include: Andromeda XI, XII, XIII, XV, XVI, XVIII, XIX, and XX.^[3]

See also

• Andromeda Galaxy
• Local Group
• List of Andromeda's satellite galaxies

References

Andromeda Galaxy
Location	Andromeda Galaxy→Andromeda subgroup → Local Group → Virgo Supercluster → Laniakea Supercluster → Observable universe → Universe Each  → may be read as "within" or "part of".
Satellite galaxies	M32 M110 NGC 185 NGC 147 Andromeda I Andromeda II Andromeda III Andromeda IV* Andromeda V Andromeda VI Andromeda VII Andromeda VIII Andromeda IX Andromeda X Andromeda XI Andromeda XII Andromeda XIII Andromeda XIV Andromeda XV Andromeda XVI Andromeda XVII Andromeda XVIII Andromeda XIX Andromeda XX Andromeda XXI Andromeda XXII Andromeda XXIII Andromeda XXIV Andromeda XXV Andromeda XXVI Andromeda XXVII Andromeda XXVIII Andromeda XXIX Triangulum Galaxy* *It is uncertain whether it is a companion galaxy of the Andromeda Galaxy
Other	Andromeda–Milky Way collision S Andromedae Mayall II NGC 206 AE Andromedae