Andromeda VIII (And VIII / 8) is a

galaxy A galaxy is a system of stars, stellar remnants, interstellar gas, dust, dark matter, bound together by gravity. The word is derived from the Greek ' (), literally 'milky', a reference to the Milky Way galaxy that contains the Solar Sys ...

discovered in August 2003. It is a companion galaxy to the

Andromeda Galaxy The Andromeda Galaxy (IPA: ), also known as Messier 31, M31, or NGC 224 and originally the Andromeda Nebula, is a barred spiral galaxy with the diameter of about approximately from Earth and the nearest large galaxy to the Milky Way. The gal ...

, M31, and evaded detection for so long due to its diffuse nature. The galaxy was finally discovered by measuring the

redshift In physics, a redshift is an increase in the wavelength, and corresponding decrease in the frequency and photon energy, of electromagnetic radiation (such as light). The opposite change, a decrease in wavelength and simultaneous increase in f ...

s of stars in front of Andromeda, which proved to have different

velocities Velocity is the directional speed of an object in motion as an indication of its rate of change in position as observed from a particular frame of reference and as measured by a particular standard of time (e.g. northbound). Velocity is a ...

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).

References

External links

SEDS Webpage for Andromeda VIII
{{DEFAULTSORT:Andromeda 08 Andromeda Subgroup Local Group Andromeda (constellation) Dwarf spheroidal galaxies 5056928 Astronomical objects discovered in 2003

See also

References

External links