1 / 14

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.

cyndi
Télécharger la présentation

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

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  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

More Related