LoCuSS: Calibrating Mass-Observable Scaling Relations for Cluster Cosmology With Subaru Weak-Lensing Observations

N Okabe, YY Zhang, A Finoguenov, M Takada, Graham Smith, K Umetsu, T Futamase

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84 Citations (Scopus)

Abstract

We present a joint weak-lensing/X-ray study of galaxy cluster mass-observable scaling relations motivated by the critical importance of accurate calibration of mass proxies for future X-ray missions, including eROSITA. We use a sample of 12 clusters at z similar or equal to 0.2 that we have observed with Subaru and XMM-Newton to construct relationships between the weak-lensing mass (M) and three X-ray observables, gas temperature (T), gas mass (M-gas), and quasi-integrated gas pressure (Y-X), at overdensities of Delta = 2500, 1000, and 500 with respect to the critical density. We find that M-gas at Delta
Original languageEnglish
Pages (from-to)875-885
Number of pages11
JournalThe Astrophysical Journal
Volume721
Issue number1
DOIs
Publication statusPublished - 1 Sep 2010

Keywords

  • galaxies: clusters: general
  • gravitational lensing: weak
  • dark matter
  • cosmology: observations
  • X-rays: galaxies: clusters

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