Study of the Galactic radio sources in the SCORPIO survey resolved by
  ATCA at 2.1 GHz
  We present a catalogue of a large sample of extended radio sources in the
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, centered at l=343.5{\deg}, b=0.75{\deg} 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 $\mu$Jy/beam 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 6 new H II regions, 2 new
planetary nebulae, 2 new luminous blue variable or Wolf--Rayet stars and 3 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 analyze
interferometric data on the Galactic plane.
