ESO 306-17

ESO 306-17 is a fossil group giant elliptical galaxy in the Columba constellation, about 1 million light-years in diameter,[4] and roughly 500 million light-years away.[3]

ESO 306-17
HST image of ESO 306-17
Observation data (J2000 epoch)
ConstellationColumba
Right ascension05h 40m 06.73s[1]
Declination−40° 50′ 10.6″[1]
Redshift0.035805[2]
Helio radial velocity10542 km/s[2]
Distance519.4 ± 36.4 Mly (159.26 ± 11.15 Mpc)[3]
Apparent magnitude (B)13.36[1]
Characteristics
TypecD3[3]
Other designations
MCG -07-12-009, PGC 17570[2]

The galaxy is situated alone in a volume of space about it. It is theorized that the galaxy cannibalized its nearest companions, hence, being a fossil group.[5] The galaxy is a giant elliptical of type cD3[3] (E+3), one of the largest types of galaxies.

References
  1. "Search specification: ESO 306-17". HyperLeda. Université Claude Bernard Lyon 1. Retrieved 2021-02-13.
  2. "ESO 306-17". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 2021-02-13.
  3. "Results for object NGC ESO 306-17 (ESO 306-17)". NASA/IPAC Extragalactic Database. California Institute of Technology. Retrieved 2021-02-13.
  4. MSNBC, "A Giant Among Galaxies ?" , Alan Boyle, 4 March 2010 (accessed 5 March 2010)
  5. Astronomy Now, "Bully galaxy rules the neighbourhood", Emily Baldwin, 4 March 2010 (accessed 5 March 2010)


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