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A very brief description of LOFAR - the Low Frequency Array
H. Falcke, M. P. van Haarlem, A. G. de Bruyn +28
LOFAR (Low Frequency Array) is an innovative radio telescope optimized for the frequency range 30-240 MHz. The telescope is realized as a phased aperture array without any moving p…
The Westerbork SINGS Survey: I. Overview and Image Atlas
Robert Braun, Tom Oosterloo, Raffaella Morganti +2
We have obtained moderately deep radio continuum imaging at 18 and 22cm with the Westerbork array of 34 nearby galaxies drawn from the Spitzer SINGS and Starburst samples to enable…
Radio observations of candidate magnetic O stars
R. S. Schnerr, K. L. J. Rygl, A. J. van der Horst +3
A number of O stars are suspected to have (weak) magnetic fields because of the observed cyclical variability in their UV wind-lines. However, direct detections of these magnetic f…
Timescales of merger, starburst and AGN activity in radio galaxy B2 0648+27
B. H. C. Emonts, R. Morganti, C. N. Tadhunter +4
In this paper we use neutral hydrogen HI and optical spectroscopic observations to compare the timescales of a merger event, starburst episode and radio-AGN activity in the radio g…
Neutral hydrogen in nearby elliptical and lenticular galaxies: the continuing formation of early-type galaxies
R. Morganti, P. T. de Zeeuw, T. A. Oosterloo +6
(Abridged) We present deep WSRT observations of neutral hydrogen in 12 nearby elliptical and lenticular galaxies. The selected objects come from a representative sample of nearby g…
Minkowski's Object: A Starburst Triggered by a Radio Jet, Revisited
Steve Croft, Wil van Breugel, Wim de Vries +8
We present neutral hydrogen, ultraviolet, optical and near-infrared imaging, and optical spectroscopy, of Minkowski's Object (MO), a star forming peculiar galaxy near NGC 541. The…
IC 4200: a gas-rich early-type galaxy formed via a major merger
P. Serra, S. C. Trager, J. M. van der Hulst +2
We present the result of radio and optical observations of the S0 galaxy IC 4200. We find that the galaxy hosts 8.5 billion solar masses of HI rotating on a ~90 deg warped disk ext…