HⅠ Vertical Structure of Nearby Edge-on Galaxies from CHANG-ES

作者：Yun Zheng; Jing Wang; Judith Irwin; Q.Daniel Wang; Jiangtao Li; Jayanne English; Qingchuan Ma; Ran Wang; Ke Wang; Marita Krause; Toky H.Randriamampandry; Rainer Beck

来源：Research in Astronomy and Astrophysics, 2022, 22(08): 51-64.

• galaxies:ISM
• galaxies:spiral
• galaxies:structure

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°, 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 quasiequilibrium model of the vertical structure of gas disks. The procedure provides a convenient way to derive the scale heights and can easily be applied to statistical samples in the future.

• 单位
  北京大学