Feeding and Feedback in NGC 4151 from GEMINI Near Infrared Integral Field Spectroscopy - Astrophysics > Cosmology and Nongalactic AstrophysicsReportar como inadecuado




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Abstract: We discuss two-dimensional mapping of the near-infrared emission-lineintensity distributions and kinematics of the narrow-line region NLR of NGC4151, obtained with the Gemini Near-Infrared Integral Field Spectrograph, witha projected spatial resolution of ~8pc. The ionized gas intensity distributionfollows the projected bi-cone morphology observed in previous opticalnarrow-band images, and its kinematics reveal outflows along the bi-cone. Wepropose a kinematic model in which the gas in the NLR moves at a velocity of~600 km s^-1 up to ~100 pc from the nucleus. A completely distinct morphologyand kinematic structure is observed for the molecular gas, which avoids theregion of the bi-cone and has velocities close to systemic, and is consistentwith an origin in the galaxy plane. The molecular gas thus traces the AGNfeeding, while the ionized gas traces its feedback.



Autor: Ramiro D. Simoes Lopes, Thaisa Storchi-Bergmann, Rogemar A. Riffel, Peter J. McGregor, P. Martini

Fuente: https://arxiv.org/







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