Computer Science
Scientific paper
Apr 2007
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007iaus..238..457s&link_type=abstract
Black Holes from Stars to Galaxies -- Across the Range of Masses. Edited by V. Karas and G. Matt. Proceedings of IAU Symposium #
Computer Science
Scientific paper
We present two-dimensional (2D) gas kinematics and excitation of the inner 300 pc of the Seyfert galaxy ESO428-G14 at a sampling of 14 pc2, from near-infrared spectroscopic observations at R=5000 obtained with the Integral Field Unit of the Gemini Near-Infrared Spectrograph. From measurements of fluxes and profiles of the emission lines [Fe II] 1.257 mu, Pabeta, H2 2.121 mu and Brgamma, we construct 2D maps of line intensities and ratios, radial velocities and velocity dispersions. We compare these maps with a previously published high spatial resolution radio map and find a tight relation between the radio structure and the emission-line flux distributions and kinematics. Blueshifts of up to 400 km/s and velocity dispersions of up to 150 km/s are observed in association with the radio jet running from SE to NW along position angle 129 degrees. We conclude that the radio jet is launched at a small angle relative to the galactic plane, with the NW side slightly oriented toward us, shocking and compressing the gas located in the plane of the galaxy up to at least 200 pc from the nucleus. The distinct kinematics observed for the different emission lines reveal different origins for their emission: [Fe II], which shows the largest blueshifts and velocity dispersions, is mainly produced by the radio jet; the HI line emission is produced by photoionization from the active nucleus; and the H2 emission is produced by X-ray heating from the active nucleus which reaches the gas in the galaxy plane even beyond the radio jet region.
Barbosa Fausto K. B.
Riffel Rogemar A.
Storchi-Bergmann Thaisa
Winge Claudia
No associations
LandOfFree
Near-IR integral field spectroscopy of the NLR of ESO428-G14: the role of the radio jet does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Near-IR integral field spectroscopy of the NLR of ESO428-G14: the role of the radio jet, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Near-IR integral field spectroscopy of the NLR of ESO428-G14: the role of the radio jet will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1083046