Astronomy and Astrophysics – Astrophysics
Scientific paper
Oct 2007
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007ap%26ss.311..305d&link_type=abstract
Astrophysics and Space Science, Volume 311, Issue 1-3, pp. 305-309
Astronomy and Astrophysics
Astrophysics
3
Galaxies: Active, Galaxies: Formation, Galaxies: High-Redshift, Galaxies: Individual (4C&Nbsp, 41.17, 4C&Nbsp, 60.07, B2&Nbsp, 0902+34), Quasars: Emission Lines
Scientific paper
We present results from a Keck optical and near IR spectroscopic study of the giant emission line halos of the z>3 High Redshift Radio Galaxies (HiZRGs) 4C 41.17, 4C 60.07 and B2 0902+34. The outer regions of these halos show quiet kinematics with typical velocity dispersions of a few hundred km s-1 and velocity shears consistent with rotation. The inner regions contain shocked, clumpy cocoons of gas closely associated with the radio lobes with disturbed kinematics and expansion velocities and/or velocity dispersions >1000 km s-1. We also find evidence for the ejection of chemically enriched material in 4C 41.17 up to a distance of ˜60 kpc along the radio-axis. We infer that these HiZRGs are undergoing a final jet-induced phase of star formation with the ejection of most of their interstellar medium before evolving to become “red and dead” Elliptical galaxies.
Breugel Wil van
Bunker Andrew
Dawson Steve
de Vries Wim
Dey Arjun
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