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Cluster science in COSMOS/ LoCuSS with lessons for eROSITA and XEUS

Cluster science in COSMOS/ LoCuSS with lessons for eROSITA and XEUS. Alexis Finoguenov and COSMOS/ LoCuSS teams. COSMOS. With thanks to O.Ilbert and COSMOS photometry team. 200 clusters in COSMOS. LSS at 0.13, 0.22, 0.34, 0.37, 0.51, 0.73, 0.89 (Optical groups:0.22,0.36,0.38). K.Kovac.

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Cluster science in COSMOS/ LoCuSS with lessons for eROSITA and XEUS

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  1. Cluster science in COSMOS/LoCuSSwithlessons for eROSITA and XEUS Alexis Finoguenov and COSMOS/LoCuSS teams

  2. COSMOS With thanks to O.Ilbert and COSMOS photometry team

  3. 200 clusters in COSMOS LSS at 0.13, 0.22, 0.34, 0.37, 0.51, 0.73, 0.89 (Optical groups:0.22,0.36,0.38) K.Kovac

  4. X-ray properties vs environment AF, et al. in prep. A. Faltenbacher, AF in prep.

  5. Redshift ACF for clusters Coil et al. 2006 90 clusters with z Using the ACF value at 10/h Mpc of 0.62+/- 0.10 b(z=0.26)= 1.66 +/- 0.3 Mvir = 2-8 10^13 solar mass M500~0.5Mvir (1-4 10^13 Msun) Nico Cappelluti

  6. COSMOS Massey,AF, et al. 2007 looking through the lens at the X-ray cluster Universe

  7. Stacked weak lensing in COSMOS

  8. Lx-M relation COSMOS wl +self-calibration LoCuSS wl SDSS wl (Rykoff et al’08

  9. Cluster survey logistics

  10. COSMOS: X-ray selected clusters with weak lensing detection eROSITA Scatter in prediction vs detection is around 30% James Taylor, AF, et al. in prep. looking through the lens at the X-ray cluster Universe

  11. Low scatter X-ray proxy for the mass Kravtsov et al. 2006

  12. SDSS WL MACS Subaru WL Typical X-ray mass determinations

  13. Weak lensing calibration of Yx GROND is contributing to studies of background galaxies to achieve reliable shear-mass conversion morphology Single Elliptical or Complex small secondary or Off-center

  14. Conclusions • COSMOS yields one of the largest catalogs of distant (z>0.3) clusters • At low redshifts X_ray groups resolve over 20% of matter in dense environments, thus playing an important role in resolving WHIM • M-L relation based on weak lensing mass estimates is in agreement between COSMOS+LoCuSS vs SDSS work and also compares well to Reiprich and Boehringer 2002. • Autocorrelation of halos confirms the high mass associated with most of the systems • First weak lensing calibration of the Yx parameter at z~0.2 has been achieved. looking through the lens at the X-ray cluster Universe

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