Decomposition of distant galaxies with spiral arms
We perform the photometric decomposition, including spiral arms, of 159 galaxies at $0.1 \leq z \leq 3.3$ imaged by HST and JWST in optical and near-infrared in rest-frame. We measure various properties of spiral structure and, in particular, we confirm that pitch angles increase and azimuthal length decrease with increasing $z$, implying that spiral structure becomes more wound with time. We also measure band-shifting effects, or the spiral-to-total ratio and width relative to the disc exponential scale, and find that band-shifting effects can be as significant, or even stronger than, evolutionary effects. Furthermore, the spiral structure becomes more asymmetric at higher redshifts.
Authors
- Alexander A. Marchuk (ORCID: https://orcid.org/0000-0003-1536-0407)
- Ilia V. Chugunov (ORCID: https://orcid.org/0009-0005-4243-6368)
Institutions
- St Petersburg University (RU)
- Pulkovo Observatory (RU)
Publication Details
- Published
- 2024-12-27
- DOI
- https://doi.org/10.26119/vak2024.020
- Primary Topic
- Galaxies: Formation, Evolution, Phenomena
- Type
- article
- Field-Weighted Citation Impact
- 0.00