A5053152846- Galaxies: Formation, Evolution, Phenomena
- Astronomy and Astrophysical Research
- Stellar, planetary, and galactic studies
- Astrophysics and Star Formation Studies
- Astronomical Observations and Instrumentation
- Remote Sensing in Agriculture
- Astrophysical Phenomena and Observations
- Spaceflight effects on biology
- Space Exploration and Technology
- Plant Water Relations and Carbon Dynamics
- Planetary Science and Exploration
Yonsei University
2023-2024
Abstract Thick disks are a prevalent feature observed in numerous disk galaxies, including our own Milky Way. Their significance has been reported to vary widely, ranging from few percent 100% of the mass, depending on galaxy and measurement method. We use NewHorizon simulation, which high spatial stellar mass resolutions, investigate issue thick-disk fraction. also NewHorizon2 was run same initial conditions, but additionally traced nine chemical elements. Based sample 27 massive galaxies...
Dust in galaxies is an important tracer of galaxy properties and their evolution over time. The physical origin the grain size distribution, dust chemical composition, and, hence, associated ultraviolet-to-optical extinctions diverse remains elusive. To address this issue, we introduce a model for RAMSES code simulations with resolved multiphase interstellar medium. modelled as fluid transported gas component, decomposed into two sizes, 5 nm 0.1 μm, compositions carbonaceous silicate grains....
Based on the recent advancements in numerical simulations of galaxy formation, we anticipate achievement realistic models galaxies near future. Morphology is most basic and fundamental property galaxies, yet observations still use different methods to determine morphology, making it difficult compare them. We hereby perform a test NewHorizon simulation which has spatial mass resolutions that are remarkably high for large-volume simulation, resolve situation. generate mock images simulated...
Abstract The formation pathways of compact stellar systems (CSSs) are still under debate. We utilize the NewHorizon simulation to investigate origins such objects in field environment. identified 55 CSS candidates whose properties similar those observed ultracompact dwarfs and ellipticals (cEs). All but two most massive (cE candidates) a result short starburst. Sixteen formed by tidal stripping, while other 39 intrinsically from their birth. stripped originate dwarf-like galaxies with dark...
Thick disks are a prevalent feature observed in numerous disk galaxies including our own Milky Way. Their significance has been reported to vary widely, ranging from few 100% of the mass, depending on galaxy and measurement method. We use NewHorizon simulation which high spatial stellar mass resolutions investigate issue thick fraction. also NewHorizon2 that was run same initial conditions but additionally traced nine chemical elements. Based sample 27 massive with M* > 10^10 M_{\odot}...
The formation pathways of compact stellar systems (CSSs) are still under debate. We utilize the \NH\ simulation to investigate origins such objects in field environment. identified 55 CSS candidates whose properties similar those observed ultra-compact dwarfs and ellipticals. All but two most massive (compact elliptical candidates) a result short starburst. Sixteen formed by tidal stripping, while other 39 intrinsically from their birth. stripped originate dwarf-like galaxies with dark halo,...
We introduce a model for dust evolution in the RAMSES code simulations of galaxies with resolved multiphase interstellar medium. Dust is modelled as fluid transported gas component, and decomposed into two sizes, 5 nm 0.1 $\mu\rm m$, chemical compositions carbonaceous silicate grains. Using suite isolated disc different masses metallicities, can explore role these processes shaping key properties galaxies. The simulated Milky Way analogue reproduces dust-to-metal mass ratio (DTM), depletion...
Abstract We study star formation (SF) quenching of satellite galaxies with M * > 10 7 ⊙ within two low-mass groups ( vir = 12.9 and 12.7 ) using the NewHorizon simulation. confirm that ≲ are more prone to than their field counterparts. This quenched fraction decreases increasing stellar mass, consistent recent studies. Similar findings in cluster environments, we note a correlation between orbital motions these phenomenon SF quenching. Specifically, is suppressed at group center, for 9.1...
We study star formation (SF) quenching of satellite galaxies with $M_{*} > 10^7\,M_{\odot}$ within two low-mass groups ($M_{\rm vir}=10^{12.9}$ and $10^{12.7} \,M_{\odot}$) using the NewHorizon simulation. confirm that ($M_{*}\lesssim10^{10}\,M_{\odot}$) are more prone to than their field counterparts. This quenched fraction decreases increasing stellar mass, consistent recent studies. Similar findings in cluster environments, we note a correlation between orbital motions these phenomenon SF...
The formation pathways of lenticular galaxies (S0s) in field environments remain a matter debate. We utilize the cosmological hydrodynamic simulation, NewHorizon, to investigate issue. select two massive star-formation quenched S0s as our main sample. By closely tracing their physical and morphological evolution, we identify primary channels: mergers counter-rotating gas accretion. former induces central inflow due gravitational torques, triggering active star which quickly depletes galaxy....
Abstract The formation pathways of lenticular galaxies (S0s) in field environments remain a matter debate. We utilize the cosmological hydrodynamic simulation, NewHorizon , to investigate issue. select two massive star quenched S0s as our main sample. By closely tracing their physical and morphological evolution, we identify primary channels: mergers counterrotating gas accretion. former induces central inflow due gravitational torques, triggering active formation, which quickly depletes...