Elaine M. Sadler , V.J. McIntyre , C.A. Jackson , R.D. Cannon, PASA, 16 (3), 247.
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Title/Abstract Page: Radio Sources in the
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Matches with IRAS sources
We expect many of the SF radio sources to be IRAS detections, based on the well-known correlation between radio continuum and far-infrared (FIR) luminosities (e.g. Wunderlich et al. 1987, Condon et al. 1991). For spiral galaxies, 
(e.g. Condon & Broderick 1988, Rowan-Robinson et al. 1993), so NVSS should detect most galaxies in the IRAS Faint Source Catalog (which has a flux density limit of 0.28Jy at 
).
Of the 36 galaxies classified as SF in Table 2, two (TGN222Z132 and XGN221Z023) lie in the 3% of the sky which has no IRAS coverage (Beichman et al. 1985). Of the remaining 34 galaxies, 27 (i.e. 79%) are detected at 60
m in the IRAS Point Source Catalog or Faint Source Catalog (FSC). Figure 7 compares the radio continuum (1.4GHz) and IRAS () flux densities for these galaxies (for galaxies undetected by IRAS we show an upper limit of 0.28Jy, corresponding to the completeness level of the FSC). If we exclude one galaxy with anomalously strong 60m emission as discussed below, the mean FIR-radio ratio Q60 = S
/S1.4 GHz for the IRAS-detected galaxies is 112
8, i.e. close to that derived from other studies.
One galaxy (TMS206Z015) has an unusually high value of Q60=380, with much stronger FIR emission than would be expected from the radio continuum flux density. The most likely explanation is confusion in the IRAS beam, since this galaxy lies in a group and appears to be interacting with a companion.
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Title/Abstract Page: Radio Sources in the
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© Copyright Astronomical Society of Australia 1997