Foley, Ryan JF; Fox, Ori D; McCully, C; Phillips, M. M.; Sand, D.; Zheng, WeiKang; Challis, Peter M; Filippenko, Alexei; Folatelli, G; Hillebrandt, Wolfgang; Hsiao, E Y; Seitenzahl, Ivo
SN 2014J in M82 is the closest detected Type Ia supernova (SN Ia) in at least 28 yr and perhaps in 410 yr. Despite its small distance of 3.3 Mpc, SN 2014J is surprisingly faint, peaking at V = 10.6 mag, and assuming a typical SN Ia luminosity, we infer an observed visual extinction of AV = 2.0 ± 0.1 mag. But this picture, with RV = 1.6 ± 0.2, is too simple to account for all observations. We combine 10 epochs (spanning a month) of HST/Space Telescope Imaging Spectrograph (STIS) ultraviolet...[Show more]
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