Andromeda VIII

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Andromeda VIII
Observation data (J2000 epoch)
ConstellationAndromeda
Right ascension 00h 42m 06.0s[1]
Declination+40° 37′ 00″[1]
Distance (comoving)0.83 Mpc
Distance2.7 Mly
Absolute magnitude (V)-15.6
Characteristics
TypedSph
Apparent size (V)45 × 10 arcmin
Notable featuressatellite galaxy of the Andromeda Galaxy
Other designations
And VIII, PGC 5056928
See also: Galaxy, List of galaxies

Andromeda VIII (And VIII / 8) is a galaxy discovered in August 2003. It is a companion galaxy to the Andromeda Galaxy, M31, and evaded detection for so long due to its diffuse nature; the galaxy was finally discovered by measuring the redshifts of stars in front of Andromeda, which proved to have different velocities than M31 and hence were part of a different galaxy.

As of at least 2006, the actuality of And VIII as a galaxy has not yet been firmly established (Merrett et al. 2006).[2]

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References[edit]

  1. ^ a b "NAME Andromeda VIII". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 17 March 2018.
  2. ^ Merrett, H. R.; Merrifield, M. R.; Douglas, N. G.; Kuijken, K.; Romanowsky, A. J.; Napolitano, N. R.; Arnaboldi, M.; Capaccioli, M.; et al. (June 2006), "A deep kinematic survey of planetary nebulae in the Andromeda galaxy using the Planetary Nebula Spectrograph", Monthly Notices of the Royal Astronomical Society, 369 (1): 120–142, arXiv:astro-ph/0603125, Bibcode:2006MNRAS.369..120M, doi:10.1111/j.1365-2966.2006.10268.x

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