Dwarf spheroidal galaxy in the constellation Andromeda
Not to be confused with 2 Andromedae or 11 Andromedae.
For Andromeda 11 (Andromeda XI), see List of Andromeda's satellite galaxies.
Andromeda II
Andromeda II, as taken by the Hubble Space Telescope
Observation data (J2000 epoch)
Constellation
Pisces
Right ascension
01h 16m 29.8s[1]
Declination
+33° 25′ 09″[1]
Redshift
−188 ± 3 km/s[1]
Distance
2.22 ± 0.07 Mly (680 ± 20 kpc)[2][3]
Apparent magnitude (V)
13.5[1]
Characteristics
Type
dSph[1]
Apparent size (V)
3.6′ × 2.52′[1]
Notable features
satellite galaxy of M31
Other designations
Andromeda II Dwarf Spheroidal,[1]
PGC 4601,[1][4] And II[5]
Andromeda II (And II) is a dwarf spheroidal galaxy about 2.22 Mly away in the constellation Pisces. While part of the Local Group, it is not quite clear if it is a satellite of the Andromeda Galaxy or the Triangulum Galaxy.[citation needed]
It was discovered by Sidney Van den Bergh[6] in a survey of photographic plates taken with the Palomar 48-inch (1.2 m) Schmidt telescope in 1970 and 1971, together with Andromeda I, Andromeda III, and the presumable non- or background galaxy Andromeda IV.[7]
^ abcdefgh"NASA/IPAC Extragalactic Database". Results for Andromeda II. Retrieved 2006-11-29.
^I. D. Karachentsev; V. E. Karachentseva; W. K. Hutchmeier; D. I. Makarov (2004). "A Catalog of Neighboring Galaxies". Astronomical Journal. 127 (4): 2031–2068. Bibcode:2004AJ....127.2031K. doi:10.1086/382905.
^Karachentsev, I. D.; Kashibadze, O. G. (2006). "Masses of the local group and of the M81 group estimated from distortions in the local velocity field". Astrophysics. 49 (1): 3–18. Bibcode:2006Ap.....49....3K. doi:10.1007/s10511-006-0002-6. S2CID 120973010.
^"NAME Andromeda II". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 2006-11-29.
^Cite error: The named reference Bergh2000 was invoked but never defined (see the help page).
^McConnachie, A. W.; Irwin, M. J.; Ferguson, A. M. N.; Ibata, R. A.; Lewis, G. F.; Tanvir, N. (2005). "Distances and metallicities for 17 Local Group galaxies". Monthly Notices of the Royal Astronomical Society. 356 (4): 979–997. arXiv:astro-ph/0410489. Bibcode:2005MNRAS.356..979M. doi:10.1111/j.1365-2966.2004.08514.x.
^Van den Bergh, Sydney (January 1972). "Search for Faint Companions to M31". Astrophysical Journal. 171: L31. Bibcode:1972ApJ...171L..31V. doi:10.1086/180861.
AndromedaII (And II) is a dwarf spheroidal galaxy about 2.22 Mly away in the constellation Pisces. While part of the Local Group, it is not quite clear...
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identified in 2016 during a visual inspection of a full color image of the AndromedaII dwarf galaxy. DGSAT I resides in a low-density environment compared to...
kpc[a] from the Andromeda Galaxy. The galaxy was discovered in 1999 by various authors on the Second Palomar Observatory Sky Survey (POSS II) films. List...
recently, an update to the estimated age of the universe. He discovered AndromedaII. The second part of his career began in 1978 in Victoria, British Columbia...
2002), "Rotational velocities of A-type stars in the northern hemisphere. II. Measurement of v sin i", Astronomy and Astrophysics, 393: 897–911, arXiv:astro-ph/0205255...
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