We study the vertical distribution of the highly inclined galaxies from the Continuum Halos in Nearby Galaxies - an EVLA Survey (CHANG-ES). We explore the feasibility of photometrically deriving the HI disk scale-heights from the moment-0 images of the relatively edge-on galaxies with inclination >80 deg, by quantifying the systematic broadening effects and thus deriving correction equations for direct measurements. The corrected HI disk scale-heights of the relatively edge-on galaxies from the CHANG-ES sample show trends consistent with the quasi-equilibrium model of the vertical structure of gas disks. The procedure provide a convenient way to derive the scale-heights and can easily be applied to statistical samples in the future.
@article{arxiv.2205.10263,
title = {HI Vertical Structure of Nearby Edge-on Galaxies from CHANG-ES},
author = {Yun Zheng and Jing Wang and Judith Irwin and Q. Daniel Wang and Jiangtao Li and Jayanne English and Qingchuan Ma and Ran Wang and Ke Wang and Marita Krause and Toky H. Randriamampandry and Rainer Beck},
journal= {arXiv preprint arXiv:2205.10263},
year = {2022}
}
Comments
Accepted for publication in Research in Astronomy nd Astrophysics (RAA) journal