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Machine Learning the Dark Matter Halo Mass of the Milky Way
Elaheh Hayati, Peter Behroozi, Ekta Patel +3
Although numerous dynamical techniques have been developed to estimate the total dark matter halo mass of the Milky Way, it remains poorly constrained, with typical systematic unce…
Variable gravitational potential of Milky Way analogues in HESTIA suite
Naira R. Arakelyan, Sergey V. Pilipenko, Stefan Gottlöber +3
Investigations of trajectories of various objects orbiting the Milky Way (MW) halo with modern precision, achievable in observations by Gaia, requires sophisticated, non-stationary…
The impact of an evolving stellar initial mass function on early galaxies and reionisation
Elie Rasmussen Cueto, Anne Hutter, Pratika Dayal +5
Observations with JWST have revealed an unexpected high abundance of bright z>10 galaxy candidates. We explore whether a stellar initial mass function (IMF) that becomes increasing…
Environmental effects on associations of dwarf galaxies
C. Yamila Yaryura, Mario G. Abadi, Stefan Gottlöber +5
We study the properties of associations of dwarf galaxies and their dependence on the environment. Associations of dwarf galaxies are extended systems composed exclusively of dwarf…
Astraeus VI: Hierarchical assembly of AGN and their large-scale effect during the Epoch of Reionization
Maxime Trebitsch, Anne Hutter, Pratika Dayal +3
In this work, the sixth of a series, we use the ASTRAEUS (semi-numerical rAdiative tranSfer coupling of galaxy formaTion and Reionization in N-body dark matter simUlationS) framewo…
Numerical simulations of bar formation in the Local Group
Ornela F. Marioni, Mario G. Abadi, Stefan Gottlöber +1
More than 50 per cent of present-day massive disc galaxies show a rotating stellar bar. Their formation and dynamics have been widely studied both numerically and observationally.…