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On the dynamical evolution of Cepheid multiplicity in star clusters and its implications for B-star multiplicity at birth
František Dinnbier, Richard I. Anderson, Pavel Kroupa
Classical Cepheid variable stars provide a unique probe to binary evolution in intermediate-mass stars over the course of several tens to hundreds of Myr. We studied the binary and…
The impact of a top-heavy IMF on the formation and evolution of dark star clusters
Ali Rostami Shirazi, Hosein Haghi, Akram Hasani Zonoozi +2
The Spitzer instability leads to the formation of a black hole sub-system (BHSub) at the center of a star cluster providing energy to luminous stars (LSs) and increasing their rate…
Effects of physical conditions on the stellar initial mass function: The low-metallicity star-forming region Sh 2-209
Marie Zinnkann, Henriette Wirth, Pavel Kroupa
Recent work suggested that the variation of the initial mass function (IMF) of stars depends on the physical conditions, notably, the metallicity and gas density. We investigated t…
The integrated galaxy-wide stellar initial mass function over the radial acceleration range of early-type galaxies
Jörg Dabringhausen, Pavel Kroupa
The observed radial accelerations of 462 Early-type galaxies (ETGs) at their half-mass radii are discussed. They are compared to the baryonic masses of the same galaxies, which are…
The cosmological star formation history from the Local Cosmological Volume of galaxies and constraints on the matter homogeneity
Moritz Haslbauer, Pavel Kroupa, Tereza Jerabkova
The Lilly-Madau plot is commonly interpreted as the history of the cosmic star formation of the Universe by showing the co-moving star formation rate density (SFRD) over cosmic tim…
Do old globular clusters in low mass galaxies disprove modified gravity?
Michal Bílek, Hongsheng Zhao, Benoit Famaey +6
The controversy "dark matter vs. modified gravity" constitutes a major topic of discussion. It was proposed that dynamical friction could be used to discriminate between the two al…