| ESO 306-17 | |
|---|---|
 Image of ESO 306-17 by the Hubble Space Telescope Release date: 4 March 2010 | |
| Observation data (J2000.0 epoch) | |
| Constellation | Columba |
| Right ascension | 05h 40m 06.73s[1] |
| Declination | −40° 50′ 10.6″[1] |
| Redshift | 0.035805±0.000083[2] |
| Heliocentric radial velocity | 10,734±25 km/s[2] |
| Galactocentric velocity | 10,544±26 km/s[2] |
| Distance | 517.3 ± 36.20 Mly (158.6 ± 11.1 Mpc)h−1 0.6774 (Comoving)[2] 506 Mly (155.1 Mpc)h−1 0.6774 (Light-travel) |
| Apparent magnitude (B) | 13.36[1] |
| Characteristics | |
| Type | E+3[2] |
| Size | 1,070,000 ly × 706,100 ly (328.04 kpc × 216.50 kpc) (diameter; 90% total B-band light)[2][a] 399,300 ly × 287,500 ly (122.42 kpc × 88.15 kpc) (diameter; "total" magnitude)[2][a] |
| Apparent size (V) | 2.5′ × 1.5′ (V-band)[2] |
| Other designations | |
| MCG -07-12-009, PGC 17570[3] | |
ESO 306-17 is a fossil group giant elliptical galaxy in the Columba constellation, about 1.07 million light-years in diameter,[2][4] and roughly 517 million light-years away.[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[2] (E+3), one of the largest types of galaxies.
- ^ a b c "Search specification: ESO 306-17". HyperLeda. Université Claude Bernard Lyon 1. Retrieved 2021-02-13.
- ^ a b c d e f g h i j k "Results for object NGC ESO 306-17 (ESO 306-17)". NASA/IPAC Extragalactic Database. California Institute of Technology. Retrieved 2021-02-13.
- ^ "ESO 306-17". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 2021-02-13.
- ^ Boyle, Alan (2010-03-04). "A giant among galaxies?". NBC News. Retrieved 2024-09-08.
- ^ Baldwin, Emily (4 March 2010). "Bully galaxy rules the neighbourhood". Astronomy Now. Archived from the original on 2010-03-07.
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