Abell 2390
| Abell 2390 | |
|---|---|
| Observation data (Epoch J2000) | |
| Constellation(s) | Pegasus |
| Right ascension | 21h 53m 34.6s |
| Declination | +17° 40′ 11″ |
| Brightest member | LEDA 140982 |
| Richness class | 1 |
| Redshift | 0.22800 |
| Distance | 919 Mpc (2,997 Mly) h−1 0.705 |
| ICM temperature | 8.89 keV |
| Binding mass | 10.74×1014 M☉ |
| X-ray flux | (9.60 ± 23.4%)×10−12 erg s−1 cm−2 (0.1–2.4 keV) |
Abell 2390 is a massive galaxy cluster located in the constellation Pegasus. It is classified as an X-ray and rich galaxy clusters measured cooling rate of 200-300 Mʘyr−1. The galaxy cluster contains a cD galaxy called Abell 2390 BCG (short for brightest cluster galaxy), associated with a complex radio source, B2151+141.
A study has been conducted on the galaxy members of Abell 2390 and finds each of them have different morphology classifications. Further evidence also points out only a few galaxies show star formations, indicating starbursts play no major role in propelling the galaxy cluster's evolution.
Based on weak gravitational distortion of galaxies lying in the background, dark matter distribution is detected in Abell 2390. Its X-ray distribution in the cluster is elliptical and distorted by its sub-structure on a large scale according to an X-ray ROSAT/HRI observation.