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8 papers · 2 filters
Morphological Characteristics of Compact High-Velocity Clouds Revealed by High-Resolution WSRT Imaging
W. B. Burton, Robert Braun
A class of compact, isolated high-velocity clouds which plausibly represents a homogeneous subsample of the HVC phenomenon in a single physical state was objectively identified by…
High-resolution imaging of compact high-velocity clouds
Robert Braun, Butler Burton
Six examples of the compact, isolated high-velocity HI clouds (CHVCs) identified by Braun and Burton (1999) have been imaged with the WSRT. The 65 confirmed objects in this class d…
The radio source B 1834+620: A double-double radio galaxy with interesting properties
Arno P. Schoenmakers, A. G. de Bruyn, H. J. A. Rottgering +1
We present a study of the peculiar radio galaxy B 1834+620. It is characterised by the presence of a 420-kpc large edge-brightened radio source which is situated within, and well a…
Radio galaxies with a `double-double' morphology: II - The evolution of double-double radio galaxies and implications for the alignment effect in FRII sources
Christian R. Kaiser, A. P. Schoenmakers, H. J. A. Rottgering
A Double-Double Radio Galaxy (DDRG) is defined as consisting of a pair of double radio sources with a common centre. In this paper we present an analytical model in which the pecul…
Radio galaxies with a `double-double' morphology: I - Analysis of the radio properties and evidence for interrupted activity in active galactic nuclei
Arno P. Schoenmakers, A. G. de Bruyn, H. J. A. Rottgering +2
We present four Mpc-sized radio galaxies which consist of a pair of double-lobed radio sources, aligned along the same axis, and with a coinciding radio core. We have called these…
Deprojection of light distributions of nearby systems: perspective effect and non-uniqueness
HongSheng Zhao
Deriving the 3-dimensional volume density distribution from a 2-dimensional light distribution of a system yields generally non-unique results. The case for nearby dust-free system…