Astronomy and Astrophysics – Astronomy
Scientific paper
Jun 1985
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1985apj...293...83v&link_type=abstract
Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 293, June 1, 1985, p. 83-93. Research supported by the Alfred P. Sloan Foun
Astronomy and Astrophysics
Astronomy
171
Radio Galaxies, Radio Jets (Astronomy), Starburst Galaxies, Stellar Evolution, Astronomical Maps, Astronomical Spectroscopy, Elliptical Galaxies, Galactic Clusters, H Ii Regions, Minkowski Space, Radio Emission, Visible Spectrum
Scientific paper
New radio and optical images of Minkowski's object, a peculiar blue object near the elliptical galaxy NGC 541 in the cluster Abell 194, are presented. The observations show that the object is a region with bright optical line and continuum emission which are morphologically related and associated with a radio jet emanating from NGC 541. Optical emission is brightest near the edges of the jet, correlated with the absence of polarized radio emission, and filamentary downstream where the radio jet is deflected and decollimated. Minkowski's object exhibits unusually bright optical continuum emission, and its spectrum resembles those of galaxies dominated by giant H II regions. Observations of the prototypical starburst galaxy NGC 7714 (Weedman et al., 1981) confirm that the optical emission from Minkowski's object is caused by the photoionization of gas by type O and B stars.
Breugel Wil van
Filippenko Alexei V.
Heckman Tim
Miley George
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