Astrophysical Journal
Astrophysical Journal
5 years ago

Shape of LOSVDs in Barred Disks: Implications for Future IFU Surveys

The shape of line-of-sight velocity distributions (LOSVDs) carries important information about the internal dynamics of galaxies. The skewness of LOSVDs represents their asymmetric deviation from a Gaussian profile. Correlations between the skewness parameter ( h 3 ) and the mean velocity ( ##IMG## [http://ej.iop.org/images/0004-637X/854/1/65/apjaaa771ieqn1.gif] {$\overline{V}$} ) of a Gauss–Hermite series reflect the underlying stellar orbital configurations of different morphological components. Using two self-consistent N -body simulations of disk galaxies with different bar strengths, we investigate ##IMG## [http://ej.iop.org/images/0004-637X/854/1/65/apjaaa771ieqn2.gif] {${h}_{3}-\overline{V}$} correlations at different inclination angles. Similar to previous studies, we find anticorrelations in the disk area, and positive correlations in the bar area when viewed edge-on. However, at intermediate inclinations, ...

Publisher URL: http://iopscience.iop.org/0004-637X/854/1/65

DOI: 10.3847/1538-4357/aaa771

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