e-VLBI observations of GHz-peaked spectrum radio sources in nearby galaxies from the AT20G survey
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, w...
| Main Authors: | , , , , |
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| Format: | Journal Article |
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Wiley-Blackwell Publishing Ltd.
2009
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| Subjects: | |
| Online Access: | http://hdl.handle.net/20.500.11937/5754 |
| _version_ | 1848744885058797568 |
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| author | Hancock, P. Tingay, Steven Sadler, E. Phillips, C. Deller, A. |
| author_facet | Hancock, P. Tingay, Steven Sadler, E. Phillips, C. Deller, A. |
| author_sort | Hancock, P. |
| building | Curtin Institutional Repository |
| collection | Online Access |
| description | 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 youngest members 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. Oure-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 wereunresolved on scales of ~100 mas, implying that they are typically less than 100 pc in linear size |
| first_indexed | 2025-11-14T06:08:34Z |
| format | Journal Article |
| id | curtin-20.500.11937-5754 |
| institution | Curtin University Malaysia |
| institution_category | Local University |
| last_indexed | 2025-11-14T06:08:34Z |
| publishDate | 2009 |
| publisher | Wiley-Blackwell Publishing Ltd. |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | curtin-20.500.11937-57542017-09-13T16:02:57Z e-VLBI observations of GHz-peaked spectrum radio sources in nearby galaxies from the AT20G survey Hancock, P. Tingay, Steven Sadler, E. Phillips, C. Deller, A. continuum galaxies radio active interferometers instrumentation evolution 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 youngest members 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. Oure-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 wereunresolved on scales of ~100 mas, implying that they are typically less than 100 pc in linear size 2009 Journal Article http://hdl.handle.net/20.500.11937/5754 10.1111/j.1365-2966.2009.15055.x Wiley-Blackwell Publishing Ltd. unknown |
| spellingShingle | continuum galaxies radio active interferometers instrumentation evolution Hancock, P. Tingay, Steven Sadler, E. Phillips, C. Deller, A. e-VLBI observations of GHz-peaked spectrum radio sources in nearby galaxies from the AT20G survey |
| title | e-VLBI observations of GHz-peaked spectrum radio sources in nearby galaxies from the AT20G survey |
| title_full | e-VLBI observations of GHz-peaked spectrum radio sources in nearby galaxies from the AT20G survey |
| title_fullStr | e-VLBI observations of GHz-peaked spectrum radio sources in nearby galaxies from the AT20G survey |
| title_full_unstemmed | e-VLBI observations of GHz-peaked spectrum radio sources in nearby galaxies from the AT20G survey |
| title_short | e-VLBI observations of GHz-peaked spectrum radio sources in nearby galaxies from the AT20G survey |
| title_sort | e-vlbi observations of ghz-peaked spectrum radio sources in nearby galaxies from the at20g survey |
| topic | continuum galaxies radio active interferometers instrumentation evolution |
| url | http://hdl.handle.net/20.500.11937/5754 |