6 papers
Can Astronomy Manage Its Data?
Ray P Norris
Astronomy has a distinguished tradition of using technology to accelerate the quality and effectiveness of science, and data-intensive initiatives such as the Virtual Observatory l…
A massive star-forming region in a very early stage of evolution
K. J. Brooks, G. Garay, D. Mardones +2
We present results from a study of two luminous IRAS sources thought to be young massive star-forming regions and which have no previously detected radio continuum emission: IRAS 1…
Parsec-Scale Jets and Tori in Seyfert Galaxies
A. L. Roy, J. M. Wrobel, A. S. Wilson +6
What causes the dichotomy between very powerful and very weak radio emission from AGNs? Perhaps the engines are the same but the jets get disrupted by dense ISM in radio-quiet obje…
Radio Observations of the Hubble Deep Field South - a New Class of Radio-Luminous Galaxies?
R. P. Norris, A. Hopkins, R. J. Sault +7
We present the first results from a series of radio observations of the Hubble Deep Field South and its flanking fields. Here we consider only those sources greater than 100 microJ…
Free-Free Absorption on Parsec Scales in Seyfert Galaxies
A. L. Roy, J. S. Ulvestad, A. S. Wilson +5
Seyfert galaxies come in two main types (types 1 and 2) and the difference is probably due to obscuration of the nucleus by a torus of dense molecular material. The inner edge of t…
VLBI observations of the 6.7 and 12.2 GHz methanol masers associated with NGC 6334F
S. P. Ellingsen, R. P. Norris, P. J. Diamond +12
We present milliarcsecond resolution images of the 6.7 and 12.2 GHz methanol maser emission associated with the well-known star formation region NGC 6334F. The images agree well wi…