Masao Sako (Penn)

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Summary‣ DESpec can:‣ measure SN host galaxy spectra of 30%+ of DES SN.‣ provide redshifts, star-formation rates, gas-phasemetallicities and possibly age and metallicities ofstellar population.‣ majority of SN galaxies too faint for 4m spectroscopy‣ (look at numbers in Main Survey)‣ perform follow-up spectroscopy of ongoing SN surveys(use ~1% of fibers).