%0 Generic %1 chevallard2016modelling %A Chevallard, Jacopo %A Charlot, Stéphane %D 2016 %K galaxy modeling sed tool %T Modelling and interpreting spectral energy distributions of galaxies with BEAGLE %U http://arxiv.org/abs/1603.03037 %X We present a new-generation tool to model and interpret spectral energy distributions (SEDs) of galaxies, which incorporates in a consistent way the production of radiation and its transfer through the interstellar and intergalactic media. This flexible tool, named BEAGLE (for BayEsian Analysis of GaLaxy sEds), allows one to build mock galaxy catalogues as well as to interpret in terms of physical parameters any combination of photometric and spectroscopic galaxy observations. The current version of the tool includes the versatile modeling of the emission from stars and photoionized gas, attenuation by dust and the accounting for different instrumental effects. We show a first application of the BEAGLE tool to the interpretation of broadband SEDs of a published sample of $\sim10^4$ galaxies at redshifts $0.1 łesssim złesssim8$. We find that the constraints derived on photometric redshifts using this multi-purpose tool are comparable to those obtained using public, dedicated photometric-redshift codes and quantify this result in a rigorous statistical way. We also show how the post-processing of BEAGLE output data with the Python extension PYP-BEAGLE allows the characterization of systematic deviations between models and observations, in particular through posterior predictive checks. The modular design of the BEAGLE tool allows easy extensions to incorporate, for example, the absorption by neutral galactic and circumgalactic gas, and the emission from an active galactic nucleus, dust and shock-ionized gas. Information about public releases of the BEAGLE tool will be maintained on http://www.jacopochevallard.org/beagle.

@misc{chevallard2016modelling, abstract = {We present a new-generation tool to model and interpret spectral energy distributions (SEDs) of galaxies, which incorporates in a consistent way the production of radiation and its transfer through the interstellar and intergalactic media. This flexible tool, named BEAGLE (for BayEsian Analysis of GaLaxy sEds), allows one to build mock galaxy catalogues as well as to interpret in terms of physical parameters any combination of photometric and spectroscopic galaxy observations. The current version of the tool includes the versatile modeling of the emission from stars and photoionized gas, attenuation by dust and the accounting for different instrumental effects. We show a first application of the BEAGLE tool to the interpretation of broadband SEDs of a published sample of ${\sim}10^4$ galaxies at redshifts $0.1 \lesssim z\lesssim8$. We find that the constraints derived on photometric redshifts using this multi-purpose tool are comparable to those obtained using public, dedicated photometric-redshift codes and quantify this result in a rigorous statistical way. We also show how the post-processing of BEAGLE output data with the Python extension PYP-BEAGLE allows the characterization of systematic deviations between models and observations, in particular through posterior predictive checks. The modular design of the BEAGLE tool allows easy extensions to incorporate, for example, the absorption by neutral galactic and circumgalactic gas, and the emission from an active galactic nucleus, dust and shock-ionized gas. Information about public releases of the BEAGLE tool will be maintained on http://www.jacopochevallard.org/beagle.}, added-at = {2016-03-11T07:26:37.000+0100}, author = {Chevallard, Jacopo and Charlot, Stéphane}, biburl = {https://www.bibsonomy.org/bibtex/2f40cd8019847c236822456fb2642a8dd/miki}, description = {[1603.03037] Modelling and interpreting spectral energy distributions of galaxies with BEAGLE}, interhash = {315c3136a772775d50479edaf40f1674}, intrahash = {f40cd8019847c236822456fb2642a8dd}, keywords = {galaxy modeling sed tool}, note = {cite arxiv:1603.03037Comment: 28 pages, 14 figures, 8 tables, submitted to MNRAS}, timestamp = {2016-03-11T07:26:37.000+0100}, title = {Modelling and interpreting spectral energy distributions of galaxies with BEAGLE}, url = {http://arxiv.org/abs/1603.03037}, year = 2016 }