2 New Parkes radio surveys

In 1986, an international collaboration was launched using the Parkes 64-m telescope to survey the MCs at several radio frequencies with moderate angular resolution using a full polarization system (Haynes et al. 1986; Haynes et al. 1991). Between 1988 and 1991, four large-scale surveys of the MCs were undertaken by a team from the Australia Telescope National Facility (ATNF) and the Max-Planck-Institut für Radioastronomie, Bonn (MPIfR).

To date, the project has resulted in several studies which describe the surveys (Haynes et al. 1986, 1991), the FIR/radio correlation (Xu et al. 1992), thermal and non-thermal components (Klein et al. 1989, 1991), magnetic field in the MCs (Klein et al. 1993), the radio source catalogues at six frequencies (Papers IV, IVa and V), the discrete source radio/X-ray correlation (Filipovic et al. 1998a, hereafter Paper VI) and the discrete source radio/IR correlation (Filipovic et al. 1998b, hereafter Paper VIII).

The search for discrete radio sources in the MCs has resulted in catalogues at 1.40 (1.42 GHz for the SMC), 2.45, 4.75 and 8.55 GHz at resolutions of 15.2 (13.8), 8.85, 4.8 and 2.7$^\prime$ (HPBW), respectively (for details see Table 3 and Table 4). In addition to these specific surveys, a part of the Parkes-MIT- NRAO (PMN) southern all-sky survey at 4.85 GHz by Wright et al. (1994) covered the field of the MCs.

  

Table 3: Parameters of the six radio surveys of the LMC

  

Table 4: Parameters of the five radio surveys of the SMC

The catalogues of the LMC radio sources at these five frequencies were published in Paper IV. An additional survey and catalogue of the LMC sources at 2.30 GHz appears in Paper IVa. The SMC sources are catalogued in Paper V.

Tables 3 and 4 list the survey material of the LMC and the SMC that is used in this study of discrete sources in the MCs. The first column in Tables 3 and 4 shows the observing frequency; the second shows the resolution; the third shows the size of the observed field; the fourth gives an estimate of the noise in the maps and the fifth gives the number of sources detected at the particular frequency.