标题： 新代的恒星形成星系尘埃排放模板 显示英文标题

标题： New-generation dust emission templates for star-forming galaxies

摘要： 被恒星加热的尘埃的红外发射为星系演化研究提供了关键信息。不幸的是，观测通常局限于中红外（MIR），这使得模板成为必需品。之前发布的模板基于少量明亮星系样本，并不一定代表正常的恒星形成星系。我们构建了新的尘埃模板，包括仪器特定关系和软件工具，这些工具可以基于一个或多个波段的流量（红移范围从0到4）估算总红外（TIR）亮度和恒星形成率（SFR）。首次，这些模板同时包含了TIR亮度和比恒星形成率（sSFR）的依赖性，从而提高了它们的可靠性和实用性。我们还提供了从JWST F2100W观测中计算TIR亮度和SFR的公式（红移范围0<z<2）。我们的模板基于2584个跨越宽泛恒星质量和sSFR范围的正常恒星形成星系，其中包括更高红移时常见的sSFR。使用CIGALE和Draine & Li（2007）尘埃模型得到IR光谱及其性质。来自GALEX-SDSS-WISE遗产目录的测光数据补充了2MASS和H-ATLAS的数据，覆盖从远紫外（FUV）到500微米的波段。尘埃光谱的形状随TIR亮度变化，但也独立于sSFR变化。令人惊讶的是，在12-17微米和55-130微米的固有波长范围内，使用单个波段就可以非常精确地估算尘埃亮度。我们在不同群体上验证了单波段估计，包括本地LIRG，未发现显著的系统误差。同时使用两个或更多波段可以获得对TIR亮度的无偏估计，即使是对于恒星形成矮星系也是如此。我们获得了关于单色IR亮度、光谱形状与物理属性之间相互作用的新见解，并构建了新的尘埃亮度和SFR模板及估算器。我们提供软件用于基于1-4个波段生成模板并估算这些量（红移范围从0到4）。 显示英文摘要

摘要： The IR emission of dust heated by stars provides critical information for galaxy evolution studies. Unfortunately, observations are often limited to the MIR, making templates a necessity. Previously published templates were based on small samples of luminous galaxies, not necessarily representative of normal star-forming galaxies. We construct new dust templates, including instrument-specific relations and software tools that facilitate the estimation of the TIR luminosity and SFR based on one or several fluxes up to z=4. For the first time the templates include a dependence on both TIR luminosity and the sSFR, thereby increasing their reliability and utility. We also provide formulae for calculating TIR luminosities and SFR from JWST F2100W observations at 0<z<2. Our templates are based on 2584 normal star-forming galaxies spanning a wide range of stellar mass and sSFR, including sSFRs typical at higher redshifts. IR spectra and properties are obtained using CIGALE and the Draine & Li (2007) dust models. The photometry from the GALEX-SDSS-WISE Legacy Catalog is supplemented with 2MASS and H-ATLAS, from FUV to 500 microns. The shape of the dust spectrum varies with TIR luminosity, but also independently with sSFR. Remarkably precise estimates of the dust luminosity are possible with a single band over the rest-frame 12-17 and 55-130 microns. We validate single-band estimates on diverse populations, including local LIRGs, and find no significant systematic errors. Using two or more bands simultaneously yields unbiased estimation of the TIR luminosity even of star-forming dwarfs. We obtain fresh insights regarding the interplay between monochromatic IR luminosities, spectral shapes and physical properties, and construct new templates and estimators of the dust luminosity and SFR. We provide software for generating templates and estimating these quantities based on 1-4 bands up to z=4.