SCORPIO: A deep survey of radio emission from the stellar life-cycle
Radio emission has been detected in a broad variety of stellar objects from all stages of stellar evolution. However, most of our knowledge originates from targeted observations of small samples, which are strongly biased to sources which are peculiar at other wavelengths. In order to tackle this pr...
| Main Authors: | , , , , , , , , , |
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| Format: | Journal Article |
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Oxford University Press
2015
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| Online Access: | http://hdl.handle.net/20.500.11937/52777 |
| _version_ | 1848759008680214528 |
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| author | Umana, G. Trigilio, C. Franzen, Thomas Norris, R. Leto, P. Ingallinera, A. Buemi, C. Agliozzo, C. Cavallaro, F. Cerrigone, L. |
| author_facet | Umana, G. Trigilio, C. Franzen, Thomas Norris, R. Leto, P. Ingallinera, A. Buemi, C. Agliozzo, C. Cavallaro, F. Cerrigone, L. |
| author_sort | Umana, G. |
| building | Curtin Institutional Repository |
| collection | Online Access |
| description | Radio emission has been detected in a broad variety of stellar objects from all stages of stellar evolution. However, most of our knowledge originates from targeted observations of small samples, which are strongly biased to sources which are peculiar at other wavelengths. In order to tackle this problem we have conducted a deep 1.4 GHz survey by using the Australian Telescope Compact Array, with a net bandwidth of 1.7 GHz (1.4-3.1 GHz) , following the same observing setup as that used for the Australia Telescope Large Area Survey project, this time choosing a region more appropriate for stellar work. In this paper, the Stellar Continuum Originating from Radio Physics In Ourgalaxy (SCORPIO) project is presented as well as results from the pilot experiment. The achieved rms is 30 µJy and the angular resolution ~10 arcsec. 614 point-like sources have been extracted just from the pilot field. Only 34 of them are classified in SIMBAD or the NASA/IPAC Extragalactic Database. About 80 per cent of the extracted sources are reported in one of the inspected catalogues and 50 per cent of them appears to belong to a reddened stellar/Galactic population. However, the evaluation of extragalactic contaminants is very difficult without further investigations. Interesting results have been obtained for extended radio sources that fall in the SCORPIO field. Many roundishlike structures (indicated as bubbles in the following) have been found, some of which are classified at other wavelengths. However, for all of these sources, our project has provided us with images of unprecedented sensitivity and angular resolution. |
| first_indexed | 2025-11-14T09:53:03Z |
| format | Journal Article |
| id | curtin-20.500.11937-52777 |
| institution | Curtin University Malaysia |
| institution_category | Local University |
| last_indexed | 2025-11-14T09:53:03Z |
| publishDate | 2015 |
| publisher | Oxford University Press |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | curtin-20.500.11937-527772017-09-13T15:48:12Z SCORPIO: A deep survey of radio emission from the stellar life-cycle Umana, G. Trigilio, C. Franzen, Thomas Norris, R. Leto, P. Ingallinera, A. Buemi, C. Agliozzo, C. Cavallaro, F. Cerrigone, L. Radio emission has been detected in a broad variety of stellar objects from all stages of stellar evolution. However, most of our knowledge originates from targeted observations of small samples, which are strongly biased to sources which are peculiar at other wavelengths. In order to tackle this problem we have conducted a deep 1.4 GHz survey by using the Australian Telescope Compact Array, with a net bandwidth of 1.7 GHz (1.4-3.1 GHz) , following the same observing setup as that used for the Australia Telescope Large Area Survey project, this time choosing a region more appropriate for stellar work. In this paper, the Stellar Continuum Originating from Radio Physics In Ourgalaxy (SCORPIO) project is presented as well as results from the pilot experiment. The achieved rms is 30 µJy and the angular resolution ~10 arcsec. 614 point-like sources have been extracted just from the pilot field. Only 34 of them are classified in SIMBAD or the NASA/IPAC Extragalactic Database. About 80 per cent of the extracted sources are reported in one of the inspected catalogues and 50 per cent of them appears to belong to a reddened stellar/Galactic population. However, the evaluation of extragalactic contaminants is very difficult without further investigations. Interesting results have been obtained for extended radio sources that fall in the SCORPIO field. Many roundishlike structures (indicated as bubbles in the following) have been found, some of which are classified at other wavelengths. However, for all of these sources, our project has provided us with images of unprecedented sensitivity and angular resolution. 2015 Journal Article http://hdl.handle.net/20.500.11937/52777 10.1093/mnras/stv1976 Oxford University Press fulltext |
| spellingShingle | Umana, G. Trigilio, C. Franzen, Thomas Norris, R. Leto, P. Ingallinera, A. Buemi, C. Agliozzo, C. Cavallaro, F. Cerrigone, L. SCORPIO: A deep survey of radio emission from the stellar life-cycle |
| title | SCORPIO: A deep survey of radio emission from the stellar life-cycle |
| title_full | SCORPIO: A deep survey of radio emission from the stellar life-cycle |
| title_fullStr | SCORPIO: A deep survey of radio emission from the stellar life-cycle |
| title_full_unstemmed | SCORPIO: A deep survey of radio emission from the stellar life-cycle |
| title_short | SCORPIO: A deep survey of radio emission from the stellar life-cycle |
| title_sort | scorpio: a deep survey of radio emission from the stellar life-cycle |
| url | http://hdl.handle.net/20.500.11937/52777 |