| Abell 2142 | |
|---|---|
 Chandra X-ray Observatory image of Abell 2142. | |
| Observation data (Epoch J2000) | |
| Constellation(s) | Corona Borealis |
| Right ascension | 15h 58m 19.8s [1] |
| Declination | +27° 13′ 45.0″ [1] |
| Number of galaxies | > 100 |
| Richness class | 2[2] |
| Bautz–Morgan classification | II[2] |
| Redshift | 0.09090 (27 251 km/s) [3] |
| Distance | 381 Mpc (1,243 Mly) h−1 0.705 [3] |
| Binding mass | ~6.3×1017 M☉ |
| X-ray flux | (6.50 ± 0.70)×10−11 erg s−1 cm−2 (2-10 keV) [3] |
Abell 2142, or A2142, is a huge, X-ray luminous galaxy cluster in the constellation Corona Borealis. It is the result of a still ongoing merger between two galaxy clusters. The combined cluster is six million light years across, contains hundreds of galaxies and enough gas to make a thousand more. It is "one of the most massive objects in the universe."[1]
- ^ a b c "Cosmic Pressure Fronts Mapped by Chandra". CXC PR: 00-08. Harvard-Smithsonian Center for Astrophysics. 1 Mar 2000. Retrieved 11 Nov 2008.
- ^ a b Abell, George O.; Corwin, Harold G. Jr.; Olowin, Ronald P. (May 1989). "A catalog of rich clusters of galaxies" (PDF). Astrophysical Journal Supplement Series. 70 (May 1989): 1–138. Bibcode:1989ApJS...70....1A. doi:10.1086/191333. ISSN 0067-0049. Retrieved March 13, 2012.
- ^ a b c Cite error: The named reference
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