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5. Summary

We have presented radio continuum maps of the five "classical'' giant radio galaxies NGC 315, DA 240, 3C 236, 3C 326, and NGC 6251 at five different frequencies between 326 MHz and 10.6 GHz. All observations were obtained with full polarization information. We have integrated the intensities of the entire sources and also within individual components to derive spectra of these areas. We have obtained reliable data across almost the entire radio spectrum for these complex radio galaxies. In general, a spectral steepening is found for the diffuse components, indicating particle ageing. Quantitative analyses will follow in forthcoming papers.

Acknowledgements

E. Fürst provided a modified version of the OSMOSE programme for single-horn observations which sets up the parameters required for CLEAN. M. Wieringa provided a copy of the REDUN task developed at Leiden University. KHM thanks the Deutsche Forschungsgemeinschaft for a doctoral fellowship. AGW thanks the National Sciences and Engineering Research Council of Canada for an operating grant while he was at Athabasca University. This work was supported by the Deutsche Forschungsgemeinschaft, grant KL533/4-2. This research has made use of the NASA/IPAC Extragalactic Data Base (NED) which is operated by the Jet Propulsion Laboratory, California Institute of Technology, under contract with the National Aeronautics and Space Administration. The Westerbork Radio Observatory is operated by the Netherlands Foundation for Research in Astronomy.

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Figure 1: Map of the total intensity of NGC 315 at tex2html_wrap_inline3983. Also shown are the tex2html_wrap_inline3985-vectors of the linearly polarized emission. Their lengths are proportional to the polarized intensity

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Figure 2: Map of the linearly polarized intensity of NGC 315 at tex2html_wrap_inline3991. The tex2html_wrap_inline3993-vectors have lengths proportional to the fractional polarization

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Figure 3: Map of the total intensity of NGC 315 at tex2html_wrap_inline3987 (same layout as in Fig. 1 (click here))

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Figure 4: Map of the linearly polarized intensity of NGC 315 at tex2html_wrap_inline3995 (same layout as in Fig. 2 (click here))

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Figure 5: Map of the total intensity of NGC 315 at tex2html_wrap_inline3989 (same layout as in Fig. 1 (click here))

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Figure 6: Map of the linearly polarized intensity of NGC 315 at tex2html_wrap_inline3997 (same layout as in Fig. 2 (click here))

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Figure 7: Map of the total intensity of NGC 315 at tex2html_wrap_inline3999 (same layout as in Fig. 1 (click here))

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Figure 8: Map of the linearly polarized intensity of NGC 315 at tex2html_wrap_inline4005 (same layout as in Fig. 2 (click here))

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Figure 9: Map of the total intensity of NGC 315 at tex2html_wrap_inline4001 (same layout as in Fig. 1 (click here))

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Figure 10: Map of the linearly polarized intensity of NGC 315 at tex2html_wrap_inline4007 (same layout as in Fig. 2 (click here))

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Figure 11: Map of the total intensity of DA 240 at tex2html_wrap_inline4003 (same layout as in Fig. 1 (click here))

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Figure 12: Map of the linearly polarized intensity of DA 240 at tex2html_wrap_inline4009 (same layout as in Fig. 2 (click here))

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Figure 13: Map of the total intensity of DA 240 at tex2html_wrap_inline4011 (same layout as in Fig. 1 (click here))

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Figure 14: Map of the linearly polarized intensity of DA 240 at tex2html_wrap_inline4017 (same layout as in Fig. 2 (click here))

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Figure 15: Map of the total intensity of DA 240 at tex2html_wrap_inline4013 (same layout as in Fig. 1 (click here))

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Figure 16: Map of the linearly polarized intensity of DA 240 at tex2html_wrap_inline4019 (same layout as in Fig. 2 (click here))

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Figure 17: Map of the total intensity of DA 240 at tex2html_wrap_inline4015 (same layout as in Fig. 1 (click here))

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Figure 18: Map of the linearly polarized intensity of DA 240 at tex2html_wrap_inline4021 (same layout as in Fig. 2 (click here))

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Figure 19: Map of the total intensity of DA 240 at tex2html_wrap_inline4023 (same layout as in Fig. 1 (click here))

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Figure 20: Map of the linearly polarized intensity of DA 240 at tex2html_wrap_inline4029 (same layout as in Fig. 2 (click here))

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Figure 21: Map of the total intensity of 3C 236 at tex2html_wrap_inline4025 (same layout as in Fig. 1 (click here))

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Figure 22: Map of the linearly polarized intensity of 3C 236 at tex2html_wrap_inline4031 (same layout as in Fig. 2 (click here))

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Figure 23: Map of the total intensity of 3C 236 at tex2html_wrap_inline4027 (same layout as in Fig. 1 (click here))

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Figure 24: Map of the linearly polarized intensity of 3C 236 at tex2html_wrap_inline4033 (same layout as in Fig. 2 (click here))

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Figure 25: Map of the total intensity of 3C 236 at tex2html_wrap_inline4035 (same layout as in Fig. 1 (click here))

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Figure 26: Map of the linearly polarized intensity of 3C 236 at tex2html_wrap_inline4041 (same layout as in Fig. 2 (click here))

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Figure 27: Map of the total intensity of 3C 236 at tex2html_wrap_inline4037 (same layout as in Fig. 1 (click here))

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Figure 28: Map of the linearly polarized intensity of 3C 236 at tex2html_wrap_inline4043 (same layout as in Fig. 2 (click here))

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Figure 29: Map of the total intensity of 3C 236 at tex2html_wrap_inline4039 (same layout as in Fig. 1 (click here))

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Figure 30: Map of the linearly polarized intensity of 3C 236 at tex2html_wrap_inline4045 (same layout as in Fig. 2 (click here))

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Figure 31: Map of the total intensity of 3C 326 at tex2html_wrap_inline4047 (same layout as in Fig. 1 (click here))

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Figure 32: Map of the linearly polarized intensity of 3C 326 at tex2html_wrap_inline4053 (same layout as in Fig. 2 (click here))

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Figure 33: Map of the total intensity of 3C 326 at tex2html_wrap_inline4049 (same layout as in Fig. 1 (click here))

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Figure 34: Map of the linearly polarized intensity of 3C 326 at tex2html_wrap_inline4055 (same layout as in Fig. 2 (click here))

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Figure 35: Map of the total intensity of 3C 326 at tex2html_wrap_inline4051 (same layout as in Fig. 1 (click here))

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Figure 36: Map of the linearly polarized intensity of 3C 326 at tex2html_wrap_inline4057 (same layout as in Fig. 2 (click here))

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Figure 37: Map of the total intensity of 3C 326 at tex2html_wrap_inline4059 (same layout as in Fig. 1 (click here))

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Figure 38: Map of the linearly polarized intensity of 3C 326 at tex2html_wrap_inline4065 (same layout as in Fig. 2 (click here))

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Figure 39: Map of the total intensity of 3C 326 at tex2html_wrap_inline4061 (same layout as in Fig. 1 (click here))

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Figure 40: Map of the linearly polarized intensity of 3C 326 at tex2html_wrap_inline4067 (same layout as in Fig. 2 (click here))

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Figure 41: Map of the total intensity of NGC 6251 at tex2html_wrap_inline4063 (same layout as in Fig. 1 (click here))

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Figure 42: Map of the linearly polarized intensity of NGC 6251 at tex2html_wrap_inline4069 (same layout as in Fig. 2 (click here))

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Figure 43: Map of the total intensity of NGC 6251 at tex2html_wrap_inline4071 (same layout as in Fig. 1 (click here))

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Figure 44: Map of the linearly polarized intensity of NGC 6251 at tex2html_wrap_inline4077 (same layout as in Fig. 2 (click here))

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Figure 45: Map of the total intensity of NGC 6251 at tex2html_wrap_inline4073 (same layout as in Fig. 1 (click here))

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Figure 46: Map of the linearly polarized intensity of NGC 6251 at tex2html_wrap_inline4079 (same layout as in Fig. 2 (click here))

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Figure 47: Map of the total intensity of NGC 6251 at tex2html_wrap_inline4075 (same layout as in Fig. 1 (click here))

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Figure 48: Map of the linearly polarized intensity of NGC 6251 at tex2html_wrap_inline4081 (same layout as in Fig. 2 (click here))

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Figure 49: Map of the total intensity of NGC 6251 at tex2html_wrap_inline4083 (same layout as in Fig. 1 (click here))

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Figure 50: Map of the linearly polarized intensity of NGC 6251 at tex2html_wrap_inline4085 (same layout as in Fig. 2 (click here))

  
Figure 51: "Finding charts'' of GRGs, delineating the individual regions where integrated flux densities have been determined (Tables 7 (click here)-11 (click here)).

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Figure 52: Spectra of NGC 315

  
Figure 53: Spectra of DA 240

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Figure 54: Spectra of 3C 236

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Figure 55: Spectra of 3C 326

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Figure 56: Spectra of NGC 6251


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