Zobrazeno 1 - 10
of 232
pro vyhledávání: '"Pawlowski, Marcel S."'
The properties of satellite dwarf galaxies pose important empirical constraints to verify cosmological models on galaxy scales. Their phase-space correlations, in particular, offer interesting insights into various models. Next to the planes-of-satel
Externí odkaz:
http://arxiv.org/abs/2406.11684
Autor:
Pawlowski, Marcel S., Müller, Oliver, Taibi, Salvatore, Júlio, Mariana P., Kanehisa, Kosuke Jamie, Heesters, Nick
The galaxy system around NGC4490 was recently highlighted to display a flattened, kinematically correlated structure reminiscent of satellite galaxy planes around other hosts. Since known satellite planes are in tension with $\Lambda$CDM expectations
Externí odkaz:
http://arxiv.org/abs/2405.06016
Dwarf galaxy abundances can serve as discernment tests for models of structure formation. Previous small-scale tensions between observations and dark matter-only cosmological simulations may have been resolved with the inclusion of baryonic processes
Externí odkaz:
http://arxiv.org/abs/2405.05303
Autor:
Martinez-Delgado, David, Stein, Michael, Pawlowski, Marcel S., Makarov, Dmitry, Makarova, Lidia, Donatiello, Giuseppe, Lang, Dustin
The problem of missing satellites still remains one of the well-known problems of the Lambda-CDM cosmological theory. Despite significant progress in cosmological modeling achieved in recent years, the search for new dwarf galaxies-satellites of near
Externí odkaz:
http://arxiv.org/abs/2405.03769
Satellite group infall into the Milky Way: exploring the Crater-Leo case with new HST proper motions
Autor:
Júlio, Mariana P., Pawlowski, Marcel S., Sohn, Sangmo Tony, Taibi, Salvatore, van der Marel, Roeland P., McGaugh, Stacy S.
Context. Within $\Lambda$ Cold Dark Matter ($\Lambda$CDM) simulations, Milky Way-like galaxies accrete some of their satellite galaxies in groups of 3-5 members rather than individually. It was also suggested that this might be the reason behind the
Externí odkaz:
http://arxiv.org/abs/2404.16110
Autor:
Müller, Oliver, Pawlowski, Marcel S., Revaz, Yves, Venhola, Aku, Rejkuba, Marina, Hilker, Michael, Lutz, Katharina
Publikováno v:
A&A 684, L6 (2024)
Dwarf galaxies in groups of galaxies provide excellent test cases for models of structure formation. This led to a so-called small-scale crisis, including the famous missing satellite and too-big-to-fail problems. It was suggested that these two prob
Externí odkaz:
http://arxiv.org/abs/2403.08717
Autor:
Müller, Oliver, Heesters, Nick, Pawlowski, Marcel S., Kanehisa, Kosuke Jamie, Lelli, Federico, Libeskind, Noam I.
The spatial distribution of dwarf galaxies around their host galaxies is a critical test for the standard model of cosmology because it probes the dynamics of dark matter halos and is independent of the internal baryonic processes of galaxies. Co-mov
Externí odkaz:
http://arxiv.org/abs/2401.16002
Autor:
Crosby, Ethan, Jerjen, Helmut, Müller, Oliver, Pawlowski, Marcel S., Mateo, Mario, Lelli, Federico
We report the discovery of 40 new satellite dwarf galaxy candidates in the sphere of influence of the Sombrero galaxy (M104) the most luminous galaxy in the Local Volume. Using the Subaru Hyper Suprime-Cam, we surveyed 14.4 square degrees of its surr
Externí odkaz:
http://arxiv.org/abs/2312.03486
Autor:
Pawlowski, Marcel S.
I briefly discuss the current state of the Planes of Satellite Galaxies Problem in light of some new observational data for satellite galaxies of the Milky Way, Andromeda, Centaurus A, and other systems beyond the Local Group. In particular, I presen
Externí odkaz:
http://arxiv.org/abs/2312.01830
Autor:
Wang, Jianling, Hammer, Francois, Yang, Yanbin, Pawlowski, Marcel S., Mamon, Gary A., Wang, Haifeng
Most Milky Way dwarf galaxies are much less bound to their host than are relics of Gaia-Sausage-Enceladus and Sgr. These dwarfs are expected to have fallen into the Galactic halo less than 3 Gyr ago, and will therefore have undergone no more than one
Externí odkaz:
http://arxiv.org/abs/2311.05687