Abstract
We present narrowband-filtered integral field unit (IFU) observations of the Hot Dust-Obscured Galaxy (Hot DOG) WISE J202615.27+071624.0 (hereafter W2026+0716) at redshift z = 2.570 using Keck/OSIRIS. Our analysis reveals a multi-component ionized gas outflow structure in this heavily obscured AGN host galaxy. Multi-component Gaussian decomposition of the [Oiii] and Hα emission lines uncovers extremely broad and asymmetric profiles, characteristic of AGN-driven outflows. Kinematic mapping shows spatially distinct structures: the [Oiii] and Hα dominated components (with radii of 1.20±0.56 kpc) are separated by a projected offset of ∼ 1.1 kpc and exhibit divergent velocity regimes. The [Oiii] outflow reaches a velocity of 3210 ± 50 km s−1, while the Hα outflow component attains 2310 ± 840 km s−1. Dynamical modeling supports a biconical outflow structure, with [Oiii] and Hα emissions dominating separate cones and significant dust obscuration of the redshifted outflow. Their comparable momentum outflow rates and energy outflow rates suggest a potential physical connection in their driving mechanisms. Spectral energy distribution (SED) analysis reveals anomalous optical/UV excess, attributed to AGN photon scattering by dust or outflowing material, classifying W2026+0716 as a “Blue Hot DOG.” The derived outflow timescale (∼ 105 yr) aligns with the evolutionary phase of Blue Hot DOGs, suggesting AGN feedback operates persistently during this transitional stage.