TY - JOUR
T1 - Study of the galactic radio sources in the SCORPIO survey resolved by ATCA at 2.1 GHz
AU - Ingallinera, A.
AU - Umana, G.
AU - Trigilio, C.
AU - Norris, R.
AU - Franzen, T. M. O.
AU - Cavallaro, F.
AU - Leto, P.
AU - Buemi, C.
AU - Schilliro, F.
AU - Bufano, F.
AU - Riggi, S.
AU - Loru, S.
AU - Agliozzo, C.
PY - 2019
Y1 - 2019
N2 - We present a catalogue of a large sample of extended radio sources in the Stellar Continuum Originating from Radio Physics In Ourgalaxy (SCORPIO) field, observed and resolved by the Australia Telescope Compact Array. SCORPIO, a pathfinder project for addressing the early operations of the Australia SKA Pathfinder, is a survey of ∼5 square degrees between 1.4 and 3.1 GHz, centred at l = 343.5°, b = 0.75°, and with an angular resolution of about 10 arcsec. It is aimed at understanding the scientific and technical challenges to be faced by future Galactic surveys. With a mean sensitivity around 100 μJy beam−1 and the possibility to recover angular scales at least up to 4 arcmin, we extracted 99 extended sources, 35 of them detected for the first time. Among the 64 known sources 55 had at least a tentative classification in literature. Studying the radio morphology and comparing the radio emission with infrared we propose as candidates six new H ii regions, two new planetary nebulae, two new luminous blue variable or Wolf–Rayet stars, and three new supernova remnants. This study provides an overview of the potentiality of future radio surveys in terms of Galactic source extraction and characterization and a discussion on the difficulty to reduce and analyse interferometric data on the Galactic plane.
AB - We present a catalogue of a large sample of extended radio sources in the Stellar Continuum Originating from Radio Physics In Ourgalaxy (SCORPIO) field, observed and resolved by the Australia Telescope Compact Array. SCORPIO, a pathfinder project for addressing the early operations of the Australia SKA Pathfinder, is a survey of ∼5 square degrees between 1.4 and 3.1 GHz, centred at l = 343.5°, b = 0.75°, and with an angular resolution of about 10 arcsec. It is aimed at understanding the scientific and technical challenges to be faced by future Galactic surveys. With a mean sensitivity around 100 μJy beam−1 and the possibility to recover angular scales at least up to 4 arcmin, we extracted 99 extended sources, 35 of them detected for the first time. Among the 64 known sources 55 had at least a tentative classification in literature. Studying the radio morphology and comparing the radio emission with infrared we propose as candidates six new H ii regions, two new planetary nebulae, two new luminous blue variable or Wolf–Rayet stars, and three new supernova remnants. This study provides an overview of the potentiality of future radio surveys in terms of Galactic source extraction and characterization and a discussion on the difficulty to reduce and analyse interferometric data on the Galactic plane.
KW - galaxies
KW - radio sources (astronomy)
KW - stars
UR - https://hdl.handle.net/1959.7/uws:55774
U2 - 10.1093/mnras/stz2982
DO - 10.1093/mnras/stz2982
M3 - Article
SN - 0035-8711
VL - 490
SP - 5063
EP - 5077
JO - Monthly Notices of the Royal Astronomical Society
JF - Monthly Notices of the Royal Astronomical Society
IS - 4
ER -