{ "id": "1411.3677", "version": "v1", "published": "2014-11-13T19:37:26.000Z", "updated": "2014-11-13T19:37:26.000Z", "title": "The Far-Infrared-Radio Correlation in MS0451-03", "authors": [ "S. M. Randriamampandry", "S. M. Crawford", "C. M. Cress", "K. M. Hess", "M. Vaccari", "E. M. Wilcots", "M. A. Bershady", "G. D. Wirth" ], "comment": "14 pages, 4 figures, accepted for publication in MNRAS", "categories": [ "astro-ph.GA" ], "abstract": "We present a multi-wavelength analysis of star-forming galaxies in the massive cluster MS0451.6-0305 at z $\\sim$ 0.54 to shed new light on the evolution of the far-infrared-radio relationship in distant rich clusters. We have derived total infrared luminosities for a spectroscopically confirmed sample of cluster and field galaxies through an empirical relation based on $Spitzer$ MIPS 24 $\\mu$m photometry. The radio flux densities were measured from deep Very Large Array 1.4 GHz radio continuum observations. We find the ratio of far-infrared to radio luminosity for galaxies in an intermediate redshift cluster to be $q_{\\rm FIR}$ = 1.80$\\pm$0.15 with a dispersion of 0.53. Due to the large intrinsic dispersion, we do not find any observable change in this value with either redshift or environment. However, a higher percentage of galaxies in this cluster show an excess in their radio fluxes when compared to low redshift clusters ($27^{+23}_{-13}\\%$ to $11\\%$), suggestive of a cluster enhancement of radio-excess sources at this earlier epoch. In addition, the far-infrared-radio relationship for blue galaxies, where $q_{\\rm FIR}$ = 2.01$\\pm$0.14 with a dispersion of 0.35, is consistent with the predicted value from the field relationship, although these results are based on a sample from a single cluster.", "revisions": [ { "version": "v1", "updated": "2014-11-13T19:37:26.000Z" } ], "analyses": { "keywords": [ "far-infrared-radio correlation", "ghz radio continuum observations", "far-infrared-radio relationship", "distant rich clusters", "low redshift clusters" ], "tags": [ "journal article" ], "publication": { "doi": "10.1093/mnras/stu2411", "journal": "Monthly Notices of the Royal Astronomical Society", "year": 2015, "month": "Feb", "volume": 447, "number": 1, "pages": 168 }, "note": { "typesetting": "TeX", "pages": 14, "language": "en", "license": "arXiv", "status": "editable", "inspire": 1327796, "adsabs": "2015MNRAS.447..168R" } } }