Abell 2029
Abell 2029 or A2029 is a large cluster of galaxies 1 billion light years away in the constellation Virgo.[3][4]
| Abell 2029 cluster | |
|---|---|
| Observation data (Epoch J2000) | |
| Constellation(s) | Virgo |
| Right ascension | 15h 10m 56.20s |
| Declination | +05° 44′ 41″ |
| Brightest member | IC 1101 |
| Redshift | 0.0767[1] |
| Distance (co-moving) | 326 Mpc (1,063 Mly) h−1 0.705 [2] |
| Binding mass | 8×1014 M☉ |
| X-ray flux | 6.94×10−11 erg s-1 cm-2 (0.1-2.4 keV)[2] |
Its central galaxy, IC 1101, is the largest galaxy known. Estimates ranging from 5.6 to over 6 million light years across. Contrast this with the Milky Way, which is 200,000 light years across.
A2029 is also about 81 times bigger than the Milky Way, with a luminosity of 2×1012 L☉. This type of galaxy may have grown to its large size by accreting nearby galaxies.
References
- ↑ Walker S.A. et al 2012. X-ray observations of the galaxy cluster Abell 2029 to the virial radius. Monthly Notices of the Royal Astronomical Society 422 (4) (2012). p. 3503. doi:10.1111/j.1365-2966.2012.20860.x.
- ↑ 2.0 2.1 NASA/IPAC EXTRAGALACTIC DATABASE. NED results for object ABELL 2029. Retrieved March 11, 2012.
- ↑ Abell, George O; Corwin, Harold G. Jr & Olowin, Ronald P. 1989. A catalog of rich clusters of galaxies. Astrophysical Journal Supplement Series 70 (1989). p. 1–138. doi:10.1086/191333. Retrieved March 12, 2012.
- ↑ Chandra X-ray Observatory, "Galaxy clusters and dark energy: Chandrao opens new line of investigation on dark energy", Harvard-Smithsonian Center for Astrophysics.
Other websites
- Abell 2029 on WikiSky: DSS2, SDSS, GALEX, IRAS, Hydrogen α, X-Ray, Astrophoto, Sky Map, Articles and images
- The Scale of the Universe (Astronomy Picture of the Day 2012 March 12)
- Curious About Astronomy?, "What is the largest galaxy?", Cornell University