Unveiling Galaxy Bulge Formation with Gemini/GMOS

Average light-weighted age (top) and Z (bottom) as a function of σ0. Black Solid Squares: light-weighted values from the full population synthesis fits to the Gemini/GMOS data. Red Open Circles: The low-density environment ellipticals from Thomas et al. (2005) with SSP-equivalent values. Light Blue Open Triangles: Ganda et al. (2007) spirals (Sb–Sd) with SSP-equivalent values. Dark Blue Solid Triangles: Ganda et al. (2007) spirals where they account for an exponential SFH in their modeling, thus these represent average values. Green Open Stars: Morelli et al. (2008) cluster S0 and spirals (S0–Sbc) with SSP-equivalent values. Error bars on all parameters for our data are shown on each point. The legend in the top left corner of each panel shows the average errors for the literature samples, when provided.