Dusty Interacting Galaxy GADGET-SUNRISE Simulations ("DIGGSS")

DIGGSS is a database of simulated galaxy merger images and associated 'data' products. These simulations were created and analysed with the support of HST Theory Programs 9515, 10678 (PI Joel Primack), 10958, and 11759 (PI Patrik Jonsson). The galaxy merger simulations were produced by the N-body/SPH code GADGET (Springel & Hernquist 2002). For the details of the GADGET simulations, please refer to Cox et al. 2006, 2008. The GADGET simulations were then processed through the Monte-Carlo radiative transfer code SUNRISE (v2) to produce mock SDSS-g band images at 11 different viewing angles, including the effects of dust and new star-formation. For details of the SUNRISE code, please refer to Jonsson 2006. Finally, the mock SDSS g-band images were convolved with a PSF and added to noise map to simulate real observations. The non-parametric morphologies (Gini coefficient, M_20, Asymmetry, Concentration, Petrosian radii) and projected galaxy separations of the final images were measured by Lotz et al. 2008, 2010a, 2010b. For definitions of the non-parametric morphologies, please refer to Lotz et al. 2004.