Zobrazeno 1 - 10
of 358
pro vyhledávání: '"Moon, Jun Sung"'
Autor:
Moon, Jun-Sung, Lee, Jounghun
We present a numerical discovery that the observable stellar properties of present galaxies retain significant dependences on the primordial density and tidal fields. Analyzing the galaxy catalogs from the IllustrisTNG 300-1 simulations, we first com
Externí odkaz:
http://arxiv.org/abs/2409.04017
Autor:
Lee, Jounghun, Moon, Jun-Sung
Publikováno v:
JCAP 10 (2024) 102
We present a numerical evidence supporting the primordial origin of secondary halo bias even on the galactic mass scale. Analyzing the data from the IllustrisTNG 300-1 simulations, we investigate the dependence of halo bias on the degree of misalignm
Externí odkaz:
http://arxiv.org/abs/2406.11182
Autor:
Moon, Jun-Sung, Lee, Jounghun
Publikováno v:
Astrophys. J. 966 (2024) 100
A numerical detection of the $\tau$-driven transition of galaxy spins is presented, where $\tau$ is the degree of misalignment between the initial tidal field and protogalaxy inertia tensors. Analyzing the data from the IllustrisTNG 300-1 simulations
Externí odkaz:
http://arxiv.org/abs/2401.11707
Autor:
Moon, Jun-Sung, Lee, Jounghun
Publikováno v:
JCAP 05 (2024) 111
The immense diversity of the galaxy population in the universe is believed to stem from their disparate merging and star formation histories, and multi-scale influences of diverse environments. No single causal factor of the initial state is known to
Externí odkaz:
http://arxiv.org/abs/2311.03632
We aim to unravel the interplay between bars, star formation (SF), and active galactic nuclei (AGNs) in barred galaxies. To this end, we utilize the SDSS DR12 to select a sample of nearby (0.02 < z < 0.06) disk galaxies that are suitable for bar exam
Externí odkaz:
http://arxiv.org/abs/2305.07906
Autor:
Lee, Jounghun, Moon, Jun-Sung
Publikováno v:
Astrophys. J. Lett. 951 (2023) L26
In the linear theory, the galaxy angular momentum vectors which originate from the initial tidal interactions with surrounding matter distribution intrinsically develop perpendicular alignments with the directions of maximum matter compression, regar
Externí odkaz:
http://arxiv.org/abs/2305.04409
Autor:
Moon, Jun-Sung, Lee, Jounghun
Publikováno v:
Astrophys. J. 952 (2023) 101
Galaxy spins are believed to retain the initially acquired tendency of being aligned with the intermediate principal axes of the linear tidal field, which disseminates a prospect of using them as a probe of early universe physics. This roseate prospe
Externí odkaz:
http://arxiv.org/abs/2303.03058
Autor:
Moon, Jun-Sung, Lee, Jounghun
Publikováno v:
Astrophys. J. 952 (2023) 82
We develop a new model within which the radius-dependent transition of the subhalo inner spins with respect to the cosmic web and the variation of the transition threshold radius ($r_{\rm th}$) with subhalo mass ($M_{\rm vir}$), smoothing scale ($r_{
Externí odkaz:
http://arxiv.org/abs/2302.00679
We report the discovery of a rare early-type dwarf galaxy (dE), SDSS J125651.47+163024.2 (hereafter dE1256), possessing a tidal feature that was likely built up by accretion of an even smaller dwarf galaxy. dE1256 is located in a nearly isolated envi
Externí odkaz:
http://arxiv.org/abs/2212.03430
Autor:
Moon, Jun-Sung, Lee, Jounghun
Publikováno v:
Astrophys. J. 943 (2023) 13
A numerical detection of the radius-dependent spin transition of dark matter halos is reported. Analyzing the data from the IllustrisTNG simulations, we measure the halo spin vectors at several inner radii within the virial boundaries and investigate
Externí odkaz:
http://arxiv.org/abs/2210.15905