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Date and Time of the Query: 2019-05-23 T14:23:54 PDT
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For refcode 2006ApJ...643..173S:
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Copyright by American Astronomical Society. Reproduced by permission
2006ApJ...643..173S Ultraviolet -- to -- Far-Infrared Properties of Local Star-forming Galaxies H. R. Schmitt, D. Calzetti, L. Armus, M. Giavalisco, T. M. Heckman, R. C. Kennicutt, Jr., C. Leitherer, and G. R. Meurer Abstract. We present the results of a multiwavelength study of nearby galaxies aimed at understanding the relation between the ultraviolet and far-infrared emission in star-forming galaxies. The data set comprises new ultraviolet (from HST STIS), ground-based H{alpha}, and radio continuum observations, together with archival infrared data (from IRAS and ISO). The local galaxies are used as benchmarks for comparison of the infrared-to-ultraviolet properties with two populations of high-redshift galaxies: the submillimeter star-forming galaxies detected by SCUBA and the ultraviolet-selected Lyman break galaxies (LBGs). In addition, the long wavelength baseline covered by the present data enables us to compare the star formation rates (SFRs) derived from the observed ultraviolet, H{alpha}, infrared, and radio luminosities and to gauge the impact of dust opacity in the local galaxies. We also derive a new calibration for the nonthermal part of the radio SFR estimator, based on the comparison of 1.4 GHz measurements with a new estimator of the bolometric luminosity of the star-forming regions. We find that more actively star-forming galaxies show higher dust opacities, which is in line with previous results. We find that the local star-forming galaxies have a lower F_{lambda}_(205 microns)/F_{lambda}_(UV) ratio by 2 -- 3 orders of magnitude than the submillimeter-selected galaxies and may have a similar or somewhat higher F_{lambda}_(205 microns)/F_{lambda}_(UV) ratio than LBGs. The F_{lambda}_(205 microns)/F_{lambda}_(UV) ratio of the local galaxy population may be influenced by the cool dust emission in the far-infrared heated by nonionizing stellar populations, which may be reduced or absent in the LBGs. Key words: Galaxies: Evolution, Galaxies: Starburst, Infrared: Galaxies, Radio Continuum: Galaxies, Stars: Formation, Ultraviolet: Galaxies
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