Trimodal structure of Hercules stream explained by originating from bar resonances

Autor: Michiko S. Fujii, S.F. Portegies Zwart, Tetsuro Asano, Elena Sellentin, Jeroen Bédorf, Junichi Baba

Publikováno v: Monthly Notices of the Royal Astronomical Society, 499(2), 2416-2425

Gaia Data Release 2 revealed detailed structures of nearby stars in phase space. These include the Hercules stream, whose origin is still debated. Most of the previous numerical studies conjectured that the observed structures originate from orbits i

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::674295dfe65fd135c4be54efb6637e08
https://doi.org/10.1093/mnras/staa2849

Impact of bar resonances in the velocity-space distribution of the solar neighbourhood stars in a self-consistent N-body galactic disc simulation

Autor: Tetsuro Asano, Michiko S Fujii, Junichi Baba, Jeroen Bédorf, Elena Sellentin, Simon Portegies Zwart

Publikováno v: Monthly Notices of the Royal Astronomical Society, 514(1), 460-469

The velocity-space distribution of the solar neighbourhood stars shows complex substructures. Most of the previous studies use static potentials to investigate their origins. Instead we use a self-consistent $N$-body model of the Milky Way, whose pot

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::5292201276af61aa8648c54acad45ac7
https://ui.adsabs.harvard.edu/abs/2022MNRAS.514..460A

DeepGalaxy: Deducing the Properties of Galaxy Mergers from Images Using Deep Neural Networks

Autor: Damian Podareanu, Vikram A. Saletore, Valeriu Codreanu, Jeroen Bédorf, Penny Xuran Qian, Maxwell Xu Cai, Adel Chaibi

Publikováno v: DLS@SC

Galaxy mergers, the dynamical process during which two galaxies collide, are among the most spectacular phenomena in the Universe. During this process, the two colliding galaxies are tidally disrupted, producing significant visual features that evolv

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::89a0082b51d7c67e7f3e80ac7c299a2c
https://doi.org/10.1109/dls51937.2020.00012

Modelling the Milky Way as a dry Galaxy

Autor: S.F. Portegies Zwart, Jeroen Bédorf, Junichi Baba, Michiko S. Fujii

Publikováno v: Monthly Notices of the RAS (0035-8711), 482(2), 1983-2015

We construct a model for the Milky Way Galaxy composed of a stellar disc and bulge embedded in a dark-matter halo. All components are modelled as $N$-body systems with up to 8 billion equal-mass particles and integrated up to an age of 10\,Gyr. We fi

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::29af7a163ed410b9fedff902f9ea2941
https://hdl.handle.net/1887/84676

A distributed ASTRA toolbox

Autor: K. Joost Batenburg, Jeroen Bédorf, Jan Sijbers, Willem Jan Palenstijn

Publikováno v: Advanced Structural and Chemical Imaging
Advanced Structural and Chemical Imaging, 2(1)
Advanced Structural and Chemical Imaging, 2(1), 19. SpringerOpen

While iterative reconstruction algorithms for tomography have several advantages compared to standard backprojection methods, the adoption of such algorithms in large-scale imaging facilities is still limited, one of the key obstacles being their hig

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f29c4aab8c4b5421627f91e7f05603ad