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For refcode 1988MNRAS.235.1227C:
Retrieve 73 NED objects in this reference.
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NED Abstract

Copyright by Royal Astronomical Society. 1988MNRAS.235.1227C The correlation between far-infrared and non-thermal radio emission at 151 MHz for galaxies: observations and modelling M.J. Cox, S.A.E. Eales, P. Alexander and A.J. Fitt Mullard Radio Astronomy Observatory, Cavendish Laboratory,,Madingley Road, Cambridge CB3 0HE Accepted 1988 May 26. Received 1988 May 25; in original form 19881 January 26 Summary. We have compared far-infrared (FIR) data from the IRAS survey with the 6C radio survey (at 151 MHz) in a region defined approximately by 8^h^<{alpha}<17^h^; 31^deg^<{delta}<68^deg^. Comparison of these two flux-limited samples reveals (i) for log [f(FIR)/W m^-2^]>=12.6 a population of 74 objects for which f(FIR) and S_{nu}_ (151 MHz) are strongly correlated and most of the identification are spiral galaxies; (ii) that for log [f(FIR)/W m^-2^]<=12.6 there are ~24 identifications which are probably real, among many random coincidences indicating a population including some radio bright objects (e.g. 3C 345). At 151 MHz the radio emission is totally dominated by the non-thermal component; we find a slope for the FIR/radio correlation of 0.86 +/- 0.03, significantly different from unity and in the sense that the most luminous IR objects are more intense at 151 MHz. We have constructed models for the FIR emission from normal spiral galaxies by assuming that (i) the observed FIR luminosities represent the bulk of the radiation from young stars still embedded inside their parent molecular clouds; (ii) the average star-formation rate (W) has remained approximately constant throughout the lifetime of the massive stars. Using various analytical forms for the initial mass function and a power-law approximation for stellar lifetimes, we predict the ratios FIR-luminosity/{PSI} amd supernova-rate/{PSI}. By including a simple model for the emission from discrete supernova remnants (SNRs) we predict the ratio L_FIR_/L_151_ and find it to be greater than observed for all reasonable model parameters (including am IMF suitable for starburst galaxies). This implies that discrete SNRs cannot be responsible for the radio emission either in normal or starburst galaxies.
Retrieve 73 NED objects in this reference.
Please click here for ADS abstract

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