ESO 306-17

ESO 306-17
Observation data
Constellation	Columba
Right ascension	05h 40m 06.67s
Declination	−40° 50′ 11.4″
Redshift	0.035805
Apparent magnitude (V)	13.33
Characteristics
Type	cD3
Apparent size (V)	2.5 arcsec
Other designations
	ESO 306-17 , ESO 306-G017 , ESO-LV 306-0170 , LEDA 17570 , AM 0538-405 , MCG-07-12-009

ESO 306-17 is a fossil group giant elliptical galaxy in the Columba constellation, about 1 million light-years in diameter, and 493 million light-years away.[1]

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.[2] The galaxy is a giant elliptical of type cD3 (E+3), one of the largest classes of galaxies.

References

MSNBC, "A Giant Among Galaxies ?" , Alan Boyle, 4 March 2010 (accessed 5 March 2010)
Astronomy Now, "Bully galaxy rules the neighbourhood", Emily Baldwin, 4 March 2010 (accessed 5 March 2010)

Discovery News, "Bully for ESO 306-17", Jennifer Ouellette, 3 March 2010 (accessed 5 March 2010)
EurekAlert, "ACS Image of ESO 306-17", Colleen Sharkey, 4 March 2010 (accessed 5 March 2010)
NASA Extragalactic Database, object ESO 306-???017 (accessed 5 March 2010)
SIMBAD, "ESO 306-17 -- Galaxy" (accessed 5 March 2010)

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[1] MSNBC, "A Giant Among Galaxies ?" , Alan Boyle, 4 March 2010 (accessed 5 March 2010)

[2] Astronomy Now, "Bully galaxy rules the neighbourhood", Emily Baldwin, 4 March 2010 (accessed 5 March 2010)