176 research outputs found
Localized massive halo properties in Bahamas and Macsis simulations: scalings, log-normality, and covariance
Using tens of thousands of halos realized in the BAHAMAS and MACSIS simulations produced with a consistent astrophysics treatment that includes AGN feedback, we validate a multi-property statistical model for the stellar and hot gas mass behavior in halos hosting groups and clusters of galaxies. The large sample size allows us to extract fine-scale mass--property relations (MPRs) by performing local linear regression (LLR) on individual halo stellar mass () and hot gas mass () as a function of total halo mass (). We find that: 1) both the local slope and variance of the MPRs run with mass (primarily) and redshift (secondarily); 2) the conditional likelihood, is accurately described by a multivariate, log-normal distribution, and; 3) the covariance of and at fixed is generally negative, reflecting a partially closed baryon box model for high mass halos. We validate the analytical population model of Evrard et al. (2014), finding sub-percent accuracy in the log-mean halo mass selected at fixed property, or , when scale-dependent MPR parameters are employed. This work highlights the potential importance of allowing for running in the slope and scatter of MPRs when modeling cluster counts for cosmological studies. We tabulate LLR fit parameters as a function of halo mass at , and 1 for two popular mass conventions
Leges Academiae Wittebergensis De Studiis Et Moribus Studiosorum
Vorlageform des Erscheinungsvermerks: Wittemberg/ Gedruckt/ bey M. Georg Müllern/ Anno M. DC. XV
Der neue Lehrplan für den Gesangunterricht an den höheren Lehranstalten für die männliche Jugend : vom 21. Juni 1910 ; [(Ergänzung der Lehrpläne und Lehraufgaben vom 29. Mai 1901.)]
[(gez.) von Trott zu Solz]Progr.-Nr. 49
Ablegung der Zweiten Lehrerprüfung : für technische, Elementar- und Vorschullehrer an höheren Schulen ; für Lehrer an deutschen Auslandsschulen
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