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Compact Symmetric Objects in a complete flux density limited sample |
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| Institution: | 1. Onsala Space Observatory, Onsala 43 992, Sweden;2. Joint Institute for VLBI in Europe, Postbus 2, 7990 AA Dwingeloo, The Netherlands;3. Nuffield Radio Astronomy Laboratories, University of Manchester, NRAL, Jodrell Bank, Macclesfield, Cheshire SK11 9DL, UK;4. California Institute of Technology, 105-24, Pasadena, CA, USA;5. NRAO, Socorro, USA;6. Netherlands Foundation for Research in Astronomy, Oude Hoogeveensedijk 4, 7991 PD Dwingeloo, The Netherlands |
| Abstract: | This paper discusses the content of Compact Symmetric Objects in flux density limited VLBI surveys. We present new multi-wavelength VLBA observations confirming the CSO classification of some objects and two epoch 4 cm global VLBI observations from which we measure the hotspot expansion velocity in a CSO and confirm the expansion velocities previously measured at other wavelengths for 3 other CSOs. |
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