摘要：We present a new, publicly available library of dust spectral energy distributions (SEDs). These SEDs are characterized by only three parameters: the dust mass (Mdust), the dust temperature (Tdust), and the mid-to-total infrared color (IR8 ≡LIR/L8). The latter measures the relative contribution of polycyclic aromatic hydrocarbon (PAH) molecules to the total infrared luminosity. We used this library to model star-forming galaxies at0.5 1011M⊙) atz≤ 1have slightly lower temperatures indicative of a reduced star formation efficiency, while low mass galaxies (M∗< 1010M⊙) atz≥ 1showed reduced PAH emission, possibly linked to their lower metallicities. Building on these results, we constructed high-fidelity mock galaxy catalogs to predict the accuracy of infrared luminosities and dust masses determined using a single broadband measurement. Using a singleJames WebbSpace Telescope (JWST) MIRI band, we found thatLIRis typically uncertain by0.15 dex, with a maximum of0.25 dexwhen probing the rest-frame8μm, and this is not significantly impacted by typical redshift uncertainties. On the other hand, we found that ALMA bands 8 to 7 and 6 to 3 measured the dust mass at better than0.2and0.15 dex, respectively, and independently of redshift, while bands 9 to 6 only measuredLIRat better than0.2 dexatz> 1,3.2,3.8, and5.7, respectively. Starburst galaxies had theirLIRsignificantly underestimated when measured by a single JWST or ALMA band, while their dust mass from a single ALMA band were moderately overestimated. This dust library and the results of this paper can be used immediately to improve the design of observing proposals, and interpret more accurately the large amount of archival data fromSpitzer,Herscheland ALMA.
