Andromeda XXII

Andromeda XXII
Andromeda XXII
Observation data (J2000 epoch)
Constellation	Pisces
Right ascension	01h 27m 40s
Declination	+28° 05′ 25″
Distance	940–1,033 kiloparsecs (3.07×106–3.37×106 ly)
Apparent magnitude (V)	18.0
Characteristics
Type	dSph
Notable features	Satellite galaxy; of Triangulum
Other designations
	Andromeda XXII, And XXII, And 22, Pisces VI, Psc VI, Triangulum I, Tri I

Andromeda XXII (Pisces VI, Triangulum I) is a low surface brightness dwarf spheroidal galaxy about 940–1,033 kiloparsecs (3.07×10^⁶–3.37×10^⁶ ly) away from the Sun in the constellation Pisces, of the Local Group.

Andromeda XXII is located much closer in projection to M33 than M31 [42 kiloparsecs (140×10^³ ly) vs. 224 kiloparsecs (730×10^³ ly)]. This fact suggests that it might be the first Triangulum (M33) satellite ever discovered. However, it is currently catalogued as a satellite of Andromeda (M31).^[3]

The discovery arose from the first year data of a photometric survey of the M31/M33 subgrouping 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.

References

^ ^a ^b Deep Sky Observer's Companion, Andromeda XXII (accessed 2 April 2011)
^ ^a ^b ^c "NAME Andromeda XXII". SIMBAD. Centre de données astronomiques de Strasbourg.
^ ^a ^b ^c Nicolas F. Martin, Alan W. McConnachie, Mike Irwin, Lawrence M. Widrow, Annette M. N. Ferguson, Rodrigo A. Ibata, John Dubinski, Arif Babul, Scott Chapman, Mark Fardal, Geraint F. Lewis, Julio Navarro, R. Michael Rich; "PAndAS' cubs: discovery of two new dwarf galaxies in the surroundings of the Andromeda and Triangulum galaxies"; The Astrophysical Journal, Volume 705, Issue 1, pp. 758-765 (2009); doi:10.1088/0004-637X/705/1/758; Bibcode:2009ApJ...705..758M; arXiv:0909.0399;

[DOCdb-1] Deep Sky Observer's Companion, Andromeda XXII (accessed 2 April 2011)

[SIMBAD-2] "NAME Andromeda XXII". SIMBAD. Centre de données astronomiques de Strasbourg.

[ApJ-705-1-758-765-3] Nicolas F. Martin, Alan W. McConnachie, Mike Irwin, Lawrence M. Widrow, Annette M. N. Ferguson, Rodrigo A. Ibata, John Dubinski, Arif Babul, Scott Chapman, Mark Fardal, Geraint F. Lewis, Julio Navarro, R. Michael Rich; "PAndAS' cubs: discovery of two new dwarf galaxies in the surroundings of the Andromeda and Triangulum galaxies"; The Astrophysical Journal, Volume 705, Issue 1, pp. 758-765 (2009); doi:10.1088/0004-637X/705/1/758; Bibcode:2009ApJ...705..758M; arXiv:0909.0399;

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[2]

[3]

v t e Andromeda Galaxy
Location	Andromeda Galaxy → Andromeda subgroup → Local Group → Local Sheet → Virgo Supercluster → Laniakea Supercluster → Local Hole → Observable universe → Universe Each → may be read as "within" or "part of".	Andromeda Galaxy
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 subgroup* *It is uncertain whether these are companion galaxies of the Andromeda Galaxy
Catalogued stars	AE Andromedae AF Andromedae M31-RV
Other	Andromeda–Milky Way collision S Andromedae Mayall II M32p NGC 206 3XMM J004232.1+411314
Category

See also

References