J083454.90+553421.1
Link to XCS-DR1 entry
 |  |
| Fig. 1: The SDSS optical image with the XCS X-ray contours overlaid. | Fig. 2: The colour-magnitude diagram used to determine the magnitude gap. Green triangles are spectroscopic cluster members and circles are photometric cluster members. Red triangles are spectroscopic non-members. Only cluster members within ±0.2 mag of the r-i colour of the fossil galaxy (dotted lines) are used to calculate the gap. The two diamonds denote the second and the fourth brightest galaxy. |
Notes
This z=0.2412 system is located at
08:34:54.8 +55:34:20.9. There is only the slightest hint of an RS in
the CMD. The magnitude gap is 3.0 based on SDSS photometric data. The
X-ray emission has TX=3.9 keV and the peak lies ~3.3$
kpc from the FG. The X-ray source is extended with
R200=1.17 Mpc or ~30R90.
Fossil System
| XCS ID | Δm14 | R200 | LX | TX | Ltot | ΣL24 |
|---|
| XMMXCS J083454.8+553420.9 | 3.0 | 1.17 | 9.66 | 3.9 | 12.47 | 1.15 |
Fossil Galaxy
| SDSS ID | z | M∗ | Age | Z | log(SSFR) | Lgal |
|---|
| J083454.90+553421.1 | 0.2412 | — | — | — | — | 6.69 |