학술논문
The Co-Ordinated Radio and Infrared Survey for High-Mass Star Formation. V. The CORNISH-South Survey and Catalogue
Document Type
Working Paper
Author
Irabor, T.; Hoare, M. G.; Burton, M.; Cotton, W. D.; Diamond, P.; Dougherty, S.; Ellingsen, S. P.; Fender, R.; Fuller, G. A.; Garrington, S.; Goldsmith, P. F.; Green, J.; Gunn, A. G.; Jackson, J.; Kurtz, S.; Lumsden, S. L.; Marti, J.; McDonald, I.; Molinari, S.; Moore, T. J.; Mutale, M.; Muxlow, T.; OBrien, T.; Oudmaijer, R. D.; Paladini, R.; Pandian, J. D.; Paredes, J. M.; Richards, A. M. S.; Sanchez-Monge, A.; Spencer, R.; Thompson, M. A.; Umana, G.; Urquhart, J. S.; Wieringa, M.; Zijlstra, A.
Source
Subject
Language
Abstract
We present the first high spatial resolution radio continuum survey of the southern Galactic plane. The CORNISH project has mapped the region defined by $295^{\circ} < l < 350^{\circ}$; $|b| < 1^{\circ}$ at 5.5-GHz, with a resolution of 2.5$^{''}$ (FWHM). As with the CORNISH-North survey, this is designed to primarily provide matching radio data to the Spitzer GLIMPSE survey region. The CORNISH-South survey achieved a root mean square noise level of $\sim$ 0.11 mJy beam$^{-1}$, using the 6A configuration of the Australia Telescope Compact Array (ATCA). In this paper, we discuss the observations, data processing and measurements of the source properties. Above a 7$\sigma$ detection limit, 4701 sources were detected, and their ensemble properties show similar distributions with their northern counterparts. The catalogue is highly reliable and is complete to 90 per cent at a flux density level of 1.1 mJy. We developed a new way of measuring the integrated flux densities and angular sizes of non-Gaussian sources. The catalogue primarily provides positions, flux density measurements and angular sizes. All sources with IR counterparts at 8$\mu m$ have been visually classified, utilizing additional imaging data from optical, near-IR, mid-IR, far-IR and sub-millimetre galactic plane surveys. This has resulted in the detection of 524 H II regions of which 255 are ultra-compact H II regions, 287 planetary nebulae, 79 radio stars and 6 massive young stellar objects. The rest of the sources are likely to be extra-galactic. These data are particularly important in the characterization and population studies of compact ionized sources such as UCHII regions and PNe towards the Galactic mid-plane.