The proxy-matching tecnique

CORA S. A.; ORSI A.; RUIZ A. N.; MUÑOZ ARANCIBIA A. M.; GAWISER E.; GUAITA P.; PADILLA N. D.; NAVARRETE F.; KURCZYNSKI P.

Cartagena de Indias

Conferencia; Reunión Regional Latinoamerica de Astronomía (LARIM 2016); 2016

We introduce a novel technique for modeling luminosities at different wavelengths in large samples of galaxies, suitable for emissionprocesses whose complexity requires many untested assumptions or the use of sophisti-cated algorithms: in the ?Proxy+Matching? approach, a physical galaxy property from the model is chosen as a proxy for another property whose numerical value is unknown. Both proxy and unknown are assumed to follow a monotonic relationship, assigning that unknown to the simulated galaxies insuch a way that some observational statistics for it are reproduced. By comparing the predictions for further galaxy properties with observations, a good proxy can be found. We present the prospects of this technique forprobing the submillimeter and Lyman alpha emission from galaxies in a cosmological framework, using a semi-analytic model of galaxy formation and evolution.