The Southern H ii Region Discovery Survey (SHRDS): Pilot Survey

The Southern H ii Region Discovery Survey is a survey of the third and fourth quadrants of the Galactic plane that will detect radio recombination line (RRL) and continuum emission at cm-wavelengths from several hundred H ii region candidates using the Australia Telescope Compact Array. The targets...

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Bibliographic Details
Published in:The Astronomical journal 2017-07, Vol.154 (1), p.23
Main Authors: Brown, C., Jordan, C., Dickey, John M., Anderson, L. D., Armentrout, W. P., Balser, Dana S., Bania, T. M., Dawson, J. R., Mc Clure-Griffiths, N. M., Wenger, Trey V.
Format: Article
Language:English
Subjects:
ASTROPHYSICS, COSMOLOGY AND ASTRONOMY
AUSTRALIA
CALIBRATION
DISTANCE
EMISSION
EMISSION SPECTRA
EMISSION SPECTROSCOPY
Galaxy: structure
H2 REGIONS
HII regions
INTERMEDIATE INFRARED RADIATION
MILKY WAY
radio lines: ISM
RADIOWAVE RADIATION
RECOMBINATION
surveys
TELESCOPES
WAVELENGTHS
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Summary:The Southern H ii Region Discovery Survey is a survey of the third and fourth quadrants of the Galactic plane that will detect radio recombination line (RRL) and continuum emission at cm-wavelengths from several hundred H ii region candidates using the Australia Telescope Compact Array. The targets for this survey come from the WISE Catalog of Galactic H ii Regions and were identified based on mid-infrared and radio continuum emission. In this pilot project, two different configurations of the Compact Array Broad Band receiver and spectrometer system were used for short test observations. The pilot surveys detected RRL emission from 36 of 53 H ii region candidates, as well as seven known H ii regions that were included for calibration. These 36 recombination line detections confirm that the candidates are true H ii regions and allow us to estimate their distances.
ISSN:0004-6256
1538-3881
1538-3881
DOI:10.3847/1538-3881/aa71a7