Matches in SemOpenAlex for { <https://semopenalex.org/work/W3048960707> ?p ?o ?g. }
- W3048960707 endingPage "2477" @default.
- W3048960707 startingPage "2467" @default.
- W3048960707 abstract "ABSTRACT We present constraints on a simple analytical model for hot diffuse halo gas, derived from a fit spanning two orders of magnitude in halo mass ($M_{500} sim 10^{12.5}!-!10^{14.5} , mathrm{M}_{odot }$). The model is motivated by the observed prevalence of a precipitation limit, and its main free parameter is the central ratio of gas cooling time-scale to free-fall time-scale (tcool/tff). We use integrated X-ray and thermal Sunyaev–Zel’dovich observations of the environments around massive galaxies, galaxy groups, and clusters, averaged in halo mass bins, and obtain the best-fitting model parameters. We find tcool/tff ∼ 50–110, depending on the model extrapolation beyond the halo virial radius and possibly on biases present in the data sets used in the fitting analysis. The model adequately describes the entire mass range, except for intermediate mass haloes ($M_{500} sim 10^{13.5} , mathrm{M}_{odot }$) that systematically fall below the model predictions. However, the best fits for tcool/tff substantially exceed the values typically derived from X-ray observations of individual systems (tcool/tff ∼ 10–30). We consider several explanations for those discrepancies, including X-ray selection biases and a potential anticorrelation between X-ray luminosity and the central galaxy’s stellar mass." @default.
- W3048960707 created "2020-08-18" @default.
- W3048960707 creator A5045517691 @default.
- W3048960707 creator A5051230038 @default.
- W3048960707 creator A5085140367 @default.
- W3048960707 date "2020-12-12" @default.
- W3048960707 modified "2023-09-29" @default.
- W3048960707 title "Constraints on precipitation-limited hot haloes from massive galaxies to galaxy clusters" @default.
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