Andromeda III

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Galaxy
Andromeda III
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AladinLite
Constellation Andromeda
Position
equinox :  J2000.0 , epoch : J2000.0
Right ascension 00 h 35 m 33.8 s
declination + 36 ° 29 ′ 52 ″
Appearance
Morphological type dSph  
Brightness  (visual) 15.0 mag
Angular expansion 4 ′, 5 × 3 ′, 0
Physical data
Radial velocity (−351 ± 9) km / s  
distance (2,440,000 ± 80,000) Lj /
(748,000 ± 24,000) pc
Metallicity [Fe / H] −1.88 ± 0.11
history
discovery Sidney van den Bergh
Discovery date 1970
Catalog names
PGC  2121 • And III, RC2 Anon 0032 + 36, Andromeda III Dwarf Spheroidal,

Andromeda III also briefly And III is a spheroidal dwarf galaxy (dSph) in the constellation of Andromeda . The galaxy is about 2.44 million light years from our solar system. Andromeda III is a member of the Local Group and is a satellite of the Andromeda Galaxy M31.

And III was discovered by Sidney van den Bergh in 1970 during a survey with photographic plates taken with the 1.2 m Oschin Schmidt telescope of the Palomar observatory in 1970 and 1971 together with Andromeda I , Andromeda II , and the probable background galaxy Andromeda IV .

additional

Individual evidence

  1. ↑ a b c d e f g h NASA / IPAC Extragalactic Database . In: Results for Andromeda III . Retrieved January 21, 2008.
  2. ↑ a b McConnachie, AW; Irwin, MJ; Ferguson, AMN; Ibata, RA; Lewis, GF; Tanvir, N .: Distances and metallicities for 17 Local Group galaxies . In: Monthly Notices of the Royal Astronomical Society . 356, No. 4, 2005, pp. 979-997. arxiv : astro-ph / 0410489 . bibcode : 2005MNRAS.356..979M . doi : 10.1111 / j.1365-2966.2004.08514.x .
  3. ↑ GS Da Costa, TE Armandroff, Nelson Caldwell: The Dwarf Spheroidal Companions to M31: WFPC2 Observations of Andromeda III . In: Astronomical Journal . 124, No. 1, 2002, p. 332. arxiv : astro-ph / 0204109 . bibcode : 2005MNRAS.356..979M . doi : 10.1086 / 340965 .
  4. ↑ SIMBAD Astronomical Database . In: Results for AndIII . Retrieved November 29, 2006.
  5. ^ Sydney van den Bergh : Search for Faint Companions to M31 . In: Astrophysical Journal . 171, January 1972, p. L31. bibcode : 1972ApJ ... 171L..31V . doi : 10.1086 / 180861 .

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