Gemini observations of disks and jets in young stellar objects and in active galaxies |
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Authors: | Peter McGregor Michael Dopita Ralph Sutherland Tracy Beck Thaisa Storchi-Bergmann |
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Institution: | (1) Research School of Astronomy and Astrophysics, ANU, Cotter Road, Weston Creek, ACT, 2611, Australia;(2) Gemini Observatory, 670 N. A’ohoku Place, Hilo, HI 96720, USA;(3) Instituto de Fisica, Universidade Federal do Rio Grande do Sul, Porto Alegre, RS, 91501, Brasil |
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Abstract: | We present first results from the Near-infrared Integral Field Spectrograph (NIFS) located at Gemini North. For the active
galaxies Cygnus A and Perseus A we observe rotationally-supported accretion disks and adduce the existence of massive central
black holes and estimate their masses. In Cygnus A we also see remarkable high-excitation ionization cones dominated by photoionization
from the central engine. In the T-Tauri stars HV Tau C and DG Tau we see highly-collimated bipolar outflows in the Fe II]
λ 1.644 micron line, surrounded by a slower molecular bipolar outflow seen in the H2 lines, in accordance with the model advocated by Pyo, T.-S., et al., Astrophys. J. 570, 724 (2002). |
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Keywords: | Galaxies: active Galaxies: individual (Cygnus A Persueus A) Star formation: young stellar objects Star formation: T-Tauri stars Infrared: galaxies Instrumentation: adaptive optics |
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