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VSOP/global VLBI observations of 2021+614: Detection of hotspot advance |
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| Authors: | W Tschager R T Schilizzi I A G Snellen A G de Bruyn G K Miley H J A Rttgering H J van Langevelde C Fanti R Fanti |
| Institution: | W. Tschager, R. T. Schilizzi, I. A. G. Snellen, A. G. de Bruyn, G. K. Miley, H. J. A. Röttgering, H. J. van Langevelde, C. Fanti,R. Fanti, |
| Abstract: | We have analysed VSOP and global VLBI data at 5 GHz and VLBA + Effelsberg data at 15 GHz for 2021+614. By identifying the core as being between two bright hotspots, we show that 2021+614 is a compact symmetric object of size 40 pc. From comparison with earlier observations we deduce an apparent age of 375 yr for 2021+614. This provides additional support for the contention that compact symmetric radio objects associated with galaxies are in fact young radio sources and the possible precursors of the classical FR I or FR II radio galaxies. |
| Keywords: | Radio continuum: galaxies Galaxies: evolution Methods: data analysis |
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