1. 2XMMp clusters in the SDSS
Georg Lamer
Axel Schwope
Jan Kohnert

2. Extended sources in 2XMMp
Total extended sources: 6271
Selections:
offax > 4 arcmin, all EPIC full frame
abs (bII) > 20o , ext_ml > 5
Remaining:
In SDSS DR5 footprint: 867
Unique:
After visual screening:

3. Correlation with SDSS
Select SDSS galaxies within 1 arcmin of 411 X-ray positions
photometry (ugriz), photometric redshifts
spectra, spectroscopic redshifts
colour thumbnail images
Visual inspection of images, spectroscopic and photoscopic redshifts

4. Correlation with SDSS
Spectroscopic z = 0.223

5. Correlation with SDSS
photometric < z > = 0.38 (11 galaxies)

6. Results Sources investigated: 411 No SDSS products: 12
Spectroscopic redshifts: 116
Photometric redshifts:
Total SDSS redshifts:

7. photo-z / spectroscopic z

8. BCG colours

9. X-ray luminosities

10. Hardness ratios

11. Redshift distribution

12. Effects of large scale structure?
0.2
0.4 z
R.A.
120O
180O
240O