Search Swinburne Research Bank
Home List of Titles e-VLBI observations of GHz-peaked spectrum radio sources in nearby galaxies from the AT20G survey
Please use this identifier to cite or link to this item: http://hdl.handle.net/1959.3/64400
- e-VLBI observations of GHz-peaked spectrum radio sources in nearby galaxies from the AT20G survey
- Hancock, P. J.; Tingay, Steven J.; Sadler, Elaine M.; Phillips, Chris J.; Deller, Adam T.
- Gigahertz-peaked spectrum (GPS) radio sources are thought to be young objects which later evolve into Fanaro–Riley type I (FR I) and FR II radio galaxies. We have used the Australia Telescope 20 GHz (AT20G) survey catalogue to select a uniform sample of GPS sources with spectral peaks above 5 GHz, which should represent the youngestmembers of this class. In this paper, we present e-VLBI observations of 10 such objects which are associated with nearby (z < 0.15) galaxies and so represent a new population of local, low-power GPS sources. Our e-VLBI observations were carried out at 4.8 GHz with the Australia Telescope Long Baseline Array (LBA) using a real-time software correlator. All 10 sources were detected, and were unresolved on scales of ∼100 mas, implying that they are typically less than 100 pc in linear size.
- Publication type
- Journal article
- Research centre
- Swinburne University of Technology. Faculty of Information and Communication Technologies. Centre for Astrophysics and Supercomputing
- Monthly Notices of the Royal Astronomical Society, Vol. 397, no. 4 (Aug 2009), pp. 2030-2036
- Publication year
- FOR Code(s)
- 0201 Astronomical and Space Sciences
- Evolution; Galaxies; Gigahertz-peaked spectrum; Interferometers; Radio continuum
- Wiley-Blackwell Publishing
- Publisher URL
- Copyright © 2009 The Authors. Journal compilation copyright © 2009 RAS.
- Peer reviewed