Zobrazeno 1 - 10
of 206
pro vyhledávání: '"Lokas, Ewa L."'
Autor:
Lokas, Ewa L.
Publikováno v:
A&A 687, A82 (2024)
The Sagittarius dwarf spheroidal (Sgr dSph) galaxy provides one of the most convincing examples of tidal interaction between satellite galaxies and the Milky Way (MW). The main body of the dwarf was recently demonstrated to have an elongated, prolate
Externí odkaz:
http://arxiv.org/abs/2405.05805
Double bars make up a significant fraction of barred galaxies. We propose a new formation scenario for double bars that involves tidal interactions. We demonstrate the viability of this scenario using two examples of simulated galaxies from run TNG50
Externí odkaz:
http://arxiv.org/abs/2309.17180
Autor:
Lokas, Ewa L.
Publikováno v:
A&A 678, A147 (2023)
The formation of galaxy clusters is a complicated process that probably involves the accretion of galaxies in groups, as observed in nearby clusters, such as Virgo and Fornax. The members of the groups undergo "preprocessing" prior to cluster infall,
Externí odkaz:
http://arxiv.org/abs/2309.07494
Autor:
Martínez-García, Alberto Manuel, del Pino, Andrés, Łokas, Ewa L., van der Marel, Roeland P., Aparicio, Antonio
We present a kinematic study of a thousand of dwarf satellites of MW/M31-like hosts from the IllustrisTNG50 simulation. Internal kinematics were derived for all the snapshots to obtain a historical record of their rotation velocity in the plane of th
Externí odkaz:
http://arxiv.org/abs/2307.13683
Autor:
Lokas, Ewa L.
Publikováno v:
A&A 673, A131 (2023)
Mergers between galaxy clusters are an important stage in the formation of the large-scale structure of the Universe. Some of the mergers show a spectacular bow shock that formed as a result of recent passage of a smaller cluster through a bigger one
Externí odkaz:
http://arxiv.org/abs/2304.13585
Autor:
Lokas, Ewa L.
Publikováno v:
A&A 668, L3 (2022)
Among the many processes involved in galaxy evolution, those of bar formation, quenching, and feedback from an active galactic nucleus (AGN) seem to be connected, however, the nature of these relations remains unclear. In this work, we aim to elucida
Externí odkaz:
http://arxiv.org/abs/2211.13710
Autor:
Lokas, Ewa L.
Publikováno v:
A&A 667, A27 (2022)
A significant fraction of spiral galaxies are red, gas-poor, and have low star formation rates (SFRs). We study these unusual objects using the IllustrisTNG100 simulation. Among 1912 well-resolved disk galaxies selected from the last simulation outpu
Externí odkaz:
http://arxiv.org/abs/2209.11567
Autor:
Lokas, Ewa L.
Publikováno v:
A&A 662, A53 (2022)
A significant fraction of nearby late-type galaxies are lopsided. We study the asymmetry of the stellar component in a sample of well-resolved disky galaxies selected from the last snapshot of the Illustris TNG100 simulation based on their flatness a
Externí odkaz:
http://arxiv.org/abs/2204.01456
Autor:
Kowalczyk, Klaudia, Lokas, Ewa L.
Publikováno v:
A&A 659, A119 (2022)
Dwarf spheroidal (dSph) galaxies are believed to be strongly dark matter dominated and thus are considered perfect objects to study dark matter distribution and test theories of structure formation. They possess resolved, multiple stellar populations
Externí odkaz:
http://arxiv.org/abs/2201.00151
Autor:
Lokas, Ewa L.
Publikováno v:
A&A 655, A97 (2021)
Most of the observed and simulated galactic bars are symmetric in the face-on view. However, there are indeed cases of bars that are off-center with respect to the disk or have an asymmetric shape. The only well-known example showing both these featu
Externí odkaz:
http://arxiv.org/abs/2109.04305