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| Formato: | Preprint |
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2026
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| Acceso en línea: | https://arxiv.org/abs/2604.27159 |
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| author | Lin, Ming-Yi Medling, Anne Davies, Richard Krips, Melanie Barcos-Munoz, Loreto Genzel, Reinhard Gonzalez-Alfonso, Eduardo Gracia-Carpio, Javier Lutz, Dieter Neri, Roberto de Xivry, Gilles Orban Rosario, David Schnorr-Muller, Allan Shimizu, Taro Sternberg, Amiel Sturm, Eckhard Tacconi, Linda |
| author_facet | Lin, Ming-Yi Medling, Anne Davies, Richard Krips, Melanie Barcos-Munoz, Loreto Genzel, Reinhard Gonzalez-Alfonso, Eduardo Gracia-Carpio, Javier Lutz, Dieter Neri, Roberto de Xivry, Gilles Orban Rosario, David Schnorr-Muller, Allan Shimizu, Taro Sternberg, Amiel Sturm, Eckhard Tacconi, Linda |
| contents | We present Northern Extended Millimeter Array (NOEMA) observations of the CO (2-1) molecular gas kinematics in the nearby Compton-thick Seyfert 2 galaxy NGC 3079, with an angular resolution of 0.5" ($\sim$40 pc). To interpret the observed CO (2-1) kinematics, we model the rotating disk using two software tools, 3D-Barolo and DysmalPy, to generate mock 3D data cubes. Both models indicate, in addition to the rotating disk, the presence of a spatially unresolved nuclear component characterized by high velocity dispersion. Analysis of the visibility data reveals that the blue-shifted, high-velocity component is spatially offset from the continuum peak by 0.17" ($\sim$ 14 pc) and exhibits line-of-sight velocities of $v$ - $v_{sys}$ = -350 to -450 km s$^{-1}$, which we interpret as a nuclear molecular outflow. We calculate a molecular gas mass outflow rate of 8.82 $M_\odot$ yr$^{-1}$, with a kinetic power ($\dot{E}_{\text{out}}$) of 3.8 $\times$ 10$^{41}$ erg s$^{-1}$ and a momentum rate ($\dot{p}_{\text{out}}$) of 2.05 $\times$ 10$^{34}$ Dyne. The momentum rate exceeds the AGN radiation momentum rate by a factor of $\sim$15, suggesting an energy-driven outflow. Furthermore, we argue that the derived kinetic power of the nuclear molecular outflow favors a jet-powered scenario that explains the slowdown and brightening of the parsec-scale radio source observed with the Very Long Baseline Array. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2604_27159 |
| institution | arXiv |
| publishDate | 2026 |
| record_format | arxiv |
| spellingShingle | Molecular Outflows in the Nucleus of the Nearby Compton-thick AGN NGC 3079 Lin, Ming-Yi Medling, Anne Davies, Richard Krips, Melanie Barcos-Munoz, Loreto Genzel, Reinhard Gonzalez-Alfonso, Eduardo Gracia-Carpio, Javier Lutz, Dieter Neri, Roberto de Xivry, Gilles Orban Rosario, David Schnorr-Muller, Allan Shimizu, Taro Sternberg, Amiel Sturm, Eckhard Tacconi, Linda Astrophysics of Galaxies We present Northern Extended Millimeter Array (NOEMA) observations of the CO (2-1) molecular gas kinematics in the nearby Compton-thick Seyfert 2 galaxy NGC 3079, with an angular resolution of 0.5" ($\sim$40 pc). To interpret the observed CO (2-1) kinematics, we model the rotating disk using two software tools, 3D-Barolo and DysmalPy, to generate mock 3D data cubes. Both models indicate, in addition to the rotating disk, the presence of a spatially unresolved nuclear component characterized by high velocity dispersion. Analysis of the visibility data reveals that the blue-shifted, high-velocity component is spatially offset from the continuum peak by 0.17" ($\sim$ 14 pc) and exhibits line-of-sight velocities of $v$ - $v_{sys}$ = -350 to -450 km s$^{-1}$, which we interpret as a nuclear molecular outflow. We calculate a molecular gas mass outflow rate of 8.82 $M_\odot$ yr$^{-1}$, with a kinetic power ($\dot{E}_{\text{out}}$) of 3.8 $\times$ 10$^{41}$ erg s$^{-1}$ and a momentum rate ($\dot{p}_{\text{out}}$) of 2.05 $\times$ 10$^{34}$ Dyne. The momentum rate exceeds the AGN radiation momentum rate by a factor of $\sim$15, suggesting an energy-driven outflow. Furthermore, we argue that the derived kinetic power of the nuclear molecular outflow favors a jet-powered scenario that explains the slowdown and brightening of the parsec-scale radio source observed with the Very Long Baseline Array. |
| title | Molecular Outflows in the Nucleus of the Nearby Compton-thick AGN NGC 3079 |
| topic | Astrophysics of Galaxies |
| url | https://arxiv.org/abs/2604.27159 |