| タイトル | Erratum: "Chandra Sample of Nearby Relaxed Galaxy Clusters: Mass, Gas Fraction, and Mass-Temperature Relation" |
| 本文（外部サイト） | http://hdl.handle.net/2060/20160001397 |
| 著者（英） | Forman, W.; Kravtsov, A.; Murray, S. S.; Van Speybroeck, L.; Jones, C.; Markevitch, M.; Vikhlinin, A. |
| 著者所属（英） | NASA Goddard Space Flight Center |
| 発行日 | 2015-01-20 |
| 言語 | eng |
| 内容記述 | We present gas and total mass profiles for 13 low-redshift, relaxed clusters spanning a temperature range 0.7-9 keV, derived from all available Chandra data of sufficient quality. In all clusters, gas-temperature profiles are measured to large radii (Vikhlinin et al.) so that direct hydrostatic mass estimates are possible to nearly r500 or beyond. The gas density was accurately traced to larger radii; its profile is not described well by a beta model, showing continuous steepening with radius. The derived tot profiles and their scaling with mass generally follow the Navarro-Frenk-White model with concentration expected for dark matter halos in CDM cosmology. However, in three cool clusters, we detect a central mass component in excess of the Navarro-Frenk-White profile, apparently associated with their cD galaxies. In the inner region (r 0.1r500), the gas density and temperature profiles exhibit significant scatter and trends with mass, but they become nearly self-similar at larger radii. |
| NASA分類 | Astrophysics |
| レポートNO | GSFC-E-DAA-TN24071 |
| 権利 | Copyright, Distribution as joint owner in the copyright |
| URI | https://repository.exst.jaxa.jp/dspace/handle/a-is/559063 |
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