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236 papers · 1 filter
Ion-dominated plasma and the origin of jets in quasars
A. Hujeirat, M. Camenzind, M. Livio
Low cooling plasmas associated with large kinetic energies are likely to be the origin of the kpc-extended and well collimated extra-galactic jets. It is proposed that jets are lau…
2-Dust : a Dust Radiative Transfer Code for an Axisymmetric System
Toshiya Ueta, Margaret Meixner
We have developed a general purpose dust radiative transfer code for an axisymmetric system, 2-Dust, motivated by the recent increasing availability of high-resolution images of ci…
The Hubble Deep Field South Flanking Fields
Ray A. Lucas, Stefi A. Baum, Thomas M. Brown +22
As part of the Hubble Deep Field South program, a set of shorter 2-orbit observations were obtained of the area adjacent to the deep fields. The WFPC2 flanking fields cover a conti…
Discovery of a High-Redshift (z=0.96) Cluster of Galaxies Using a FIRST Wide-Angle Tailed Radio Source
Elizabeth L. Blanton, Michael D. Gregg, David J. Helfand +2
Using a combination of near-infrared and optical photometry, along with multi-object spectroscopy, we have confirmed the existence of a high-redshift cluster of galxies at z = 0.96…
Circumnuclear Dust in Nearby Active and Inactive Galaxies. I. Data
Paul Martini, Michael W. Regan, John S. Mulchaey +1
The detailed morphology of the interstellar medium (ISM) in the central kiloparsec of galaxies is controlled by pressure and gravitation. The combination of these forces shapes bot…
Circumnuclear Dust in Nearby Active and Inactive Galaxies. II. Bars, Nuclear Spirals, and the Fueling of Active Galactic Nuclei
Paul Martini, Michael W. Regan, John S. Mulchaey +1
(Abridged) We present a detailed study of the relation between circumnuclear dust morphology, host galaxy properties, and nuclear activity in nearby galaxies. We use our sample of…