Please use this identifier to cite or link to this item:
|Title:||SCORPIO: a deep survey of radio emission from the stellar life-cycle||Authors:||UMANA, Grazia Maria Gloria
Franzen, T. M. O.
Norris, R. P.
BUEMI, CARLA SIMONA
|Issue Date:||2015||Journal:||MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY||Number:||454||Issue:||1||First Page:||902||Abstract:||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 roundish-like 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.||Acknowledgments:||This research is supported by ASI contract I/038/08/0 ‘Hi-GAL’. This research made use of Montage, funded by the National Aeronautics and Space Administration's Earth Science Technology Office, Computation Technologies Project, under Cooperative Agreement Number NCC5-626 between NASA and the California Institute of Technology. Montage is maintained by the NASA/IPAC Infrared Science Archive.||URI:||http://hdl.handle.net/20.500.12386/23314||URL:||https://academic.oup.com/mnras/article/454/1/902/1133565||ISSN:||0035-8711||DOI:||10.1093/mnras/stv1976||Bibcode ADS:||2015MNRAS.454..902U||Fulltext:||open|
|Appears in Collections:||1.01 Articoli in rivista|
Show full item record
Files in This Item:
|1506.04531.pdf||postprint||963.76 kB||Adobe PDF||View/Open|
|stv1976.pdf||pdf editoriale||2.63 MB||Adobe PDF||View/Open|
checked on Sep 21, 2020
checked on Sep 21, 2020
Items in DSpace are published in Open Access, unless otherwise indicated.