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).
@article{arxiv.0706.0074,
title = {Gemini Observations of Disks and Jets in Young Stellar Objects and in Active Galaxies},
author = {Peter McGregor and Michael Dopita and Ralph Sutherland and Tracy Beck and Thaisa Storchi-Bergmann},
journal= {arXiv preprint arXiv:0706.0074},
year = {2019}
}
Comments
Invited paper presented at the 5th Stromlo Symposium. 9 pages, 7 figures. Accepted for publication in Astrophysics & Space Science