Helou, George and Bicay, Michael D. (1990) The Radio-Infrared Correlation within Galaxies. In: Windows on Galaxies. Astrophysics and Space Science Library. No.160. Springer Netherlands , Dordrecht, pp. 115-119. ISBN 9789401067317. https://resolver.caltech.edu/CaltechAUTHORS:20201008-112317285
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Abstract
A comparison of the distributions of 60μm infrared and 20cm radio continuum emission within spiral galaxies reveals a broad correlation between the two, which is modulated by a slow decrease in the 60μm-to-20cm ratio with increasing radius. Using these results, we propose a physical model for understanding the tight correlation between far-infrared and non-thermal radio luminosities in star-forming galaxies. This approach suggests that the basic constraint implied by the correlation is a tight coupling between the sources of the dust-heating photons and those of cosmic-ray electrons. Among spiral galaxies, we require in addition a universal relation whereby magnetic field strength scales with gas density to a power l/3 ≤ β ≤ 2/3.
| Item Type: | Book Section | |||||||||
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| Additional Information: | © Kluwer Academic Publishers 1990. This research was supported through the IRAS Extended Mission Program by the Jet Propulsion Laboratory, California Institute of Technology, under a contract with the National Aeronautics and Space Administration. M.D.B. gratefully acknowledges the support of a National Research Council Research Associateship. | |||||||||
| Group: | Infrared Processing and Analysis Center (IPAC) | |||||||||
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| Subject Keywords: | Star Formation; Spiral Galaxy; Tight Coupling; Disk Galaxy; Star Formation Activity | |||||||||
| Series Name: | Astrophysics and Space Science Library | |||||||||
| Issue or Number: | 160 | |||||||||
| DOI: | 10.1007/978-94-009-0543-6_16 | |||||||||
| Record Number: | CaltechAUTHORS:20201008-112317285 | |||||||||
| Persistent URL: | https://resolver.caltech.edu/CaltechAUTHORS:20201008-112317285 | |||||||||
| Usage Policy: | No commercial reproduction, distribution, display or performance rights in this work are provided. | |||||||||
| ID Code: | 105924 | |||||||||
| Collection: | CaltechAUTHORS | |||||||||
| Deposited By: | George Porter | |||||||||
| Deposited On: | 08 Oct 2020 20:43 | |||||||||
| Last Modified: | 16 Nov 2021 18:47 |
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