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arXiv:0706.0074 (astro-ph)
[Submitted on 1 Jun 2007]

Title:Gemini Observations of Disks and Jets in Young Stellar Objects and in Active Galaxies

Authors:Peter McGregor, Michael Dopita, Ralph Sutherland, Tracy Beck, Thaisa Storchi-Bergmann,
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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] 1.644 micron line, surrounded by a slower molecular bipolar outflow seen in the H_2 lines, in accordance with the model advocated by Pyo et al. (2002).
Comments: Invited paper presented at the 5th Stromlo Symposium. 9 pages, 7 figures. Accepted for publication in Astrophysics & Space Science
Subjects: Astrophysics (astro-ph)
Cite as: arXiv:0706.0074 [astro-ph]
  (or arXiv:0706.0074v1 [astro-ph] for this version)
  https://doi.org/10.48550/arXiv.0706.0074
Journal reference: Astrophys.SpaceSci.311:223-230,2007
Related DOI: https://doi.org/10.1007/s10509-007-9537-1

Submission history

From: Michael A. Dopita [view email]
[v1] Fri, 1 Jun 2007 06:38:02 UTC (318 KB)
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