Saved in:
| Main Authors: | , , , , , , , , , , , , , , , |
|---|---|
| Format: | Preprint |
| Published: |
2026
|
| Subjects: | |
| Online Access: | https://arxiv.org/abs/2603.07968 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1866910046130012160 |
|---|---|
| author | Chun, Kyungwon Shin, Jihye Smith, Rory Ko, Jongwan Yoo, jaewon Park, So-Myoung Byun, Woowon Chun, Sang-Hyun Hong, Sungryong Kim, Hyowon Kim, Jae-Woo Lee, Jaehyun Park, Hong Soo Rhee, Jinsu Seon, Kwang-Il Yoon, Yongmin |
| author_facet | Chun, Kyungwon Shin, Jihye Smith, Rory Ko, Jongwan Yoo, jaewon Park, So-Myoung Byun, Woowon Chun, Sang-Hyun Hong, Sungryong Kim, Hyowon Kim, Jae-Woo Lee, Jaehyun Park, Hong Soo Rhee, Jinsu Seon, Kwang-Il Yoon, Yongmin |
| contents | Low-surface-brightness (LSB) structures provide critical insights into the hierarchical formation of galaxies and galaxy clusters. The KASI Deep Rolling Imaging Fast Telescope (K-DRIFT) is designed to detect such diffuse features through deep, wide-field optical imaging with a surface brightness reaching $\sim$$30~\rm{mag}~\rm{arcsec}^{-2}$. To interpret the observation data expected from K-DRIFT, we have developed the Galaxy Replacement Technique (GRT), an $N$-body simulation framework optimized for tracing the gravitational evolution of stellar components. The GRT works by inserting high-resolution galaxy models, including a dark matter (DM) halo and stellar disk, in place of multiple low-resolution DM halos in the base $N$-body cosmological simulation. It allows us to achieve very high mass ($m_{star}=5.4\times10^4\msun\ h^{-1}$) and spatial resolution (10~$\rm{pc}~h^{-1}$) with shorter computation time compared to full hydrodynamic cosmological simulations. Therefore, this technique is particularly well-suited for studying LSB structures, with a surface brightness reaching $\sim$$31~\rm{mag}~\rm{arcsec}^{-2}$. In this paper, we present the motivation and methodology of the GRT, summarize key results from previous studies, and highlight its synergy with K-DRIFT observations. We further discuss planned science cases using the GRT, aiming to build a theoretical basis for interpreting LSB features in various environments. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2603_07968 |
| institution | arXiv |
| publishDate | 2026 |
| record_format | arxiv |
| spellingShingle | K-DRIFT Science Theme: New Theoretical Framework Using the Galaxy Replacement Technique for LSB studies Chun, Kyungwon Shin, Jihye Smith, Rory Ko, Jongwan Yoo, jaewon Park, So-Myoung Byun, Woowon Chun, Sang-Hyun Hong, Sungryong Kim, Hyowon Kim, Jae-Woo Lee, Jaehyun Park, Hong Soo Rhee, Jinsu Seon, Kwang-Il Yoon, Yongmin Astrophysics of Galaxies Low-surface-brightness (LSB) structures provide critical insights into the hierarchical formation of galaxies and galaxy clusters. The KASI Deep Rolling Imaging Fast Telescope (K-DRIFT) is designed to detect such diffuse features through deep, wide-field optical imaging with a surface brightness reaching $\sim$$30~\rm{mag}~\rm{arcsec}^{-2}$. To interpret the observation data expected from K-DRIFT, we have developed the Galaxy Replacement Technique (GRT), an $N$-body simulation framework optimized for tracing the gravitational evolution of stellar components. The GRT works by inserting high-resolution galaxy models, including a dark matter (DM) halo and stellar disk, in place of multiple low-resolution DM halos in the base $N$-body cosmological simulation. It allows us to achieve very high mass ($m_{star}=5.4\times10^4\msun\ h^{-1}$) and spatial resolution (10~$\rm{pc}~h^{-1}$) with shorter computation time compared to full hydrodynamic cosmological simulations. Therefore, this technique is particularly well-suited for studying LSB structures, with a surface brightness reaching $\sim$$31~\rm{mag}~\rm{arcsec}^{-2}$. In this paper, we present the motivation and methodology of the GRT, summarize key results from previous studies, and highlight its synergy with K-DRIFT observations. We further discuss planned science cases using the GRT, aiming to build a theoretical basis for interpreting LSB features in various environments. |
| title | K-DRIFT Science Theme: New Theoretical Framework Using the Galaxy Replacement Technique for LSB studies |
| topic | Astrophysics of Galaxies |
| url | https://arxiv.org/abs/2603.07968 |