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Paper: Intermediate-band Photometry of Type Ia Supernovae
Volume: 342, 1604-2004: Supernovae as Cosmological Lighthouses
Page: 272
Authors: Wang, X.F.; Zhou, X.; Zhang, T.M.; Li, Z.W.
Abstract: We present optical light curves of five Type Ia supernovae (2002er, 2002fk, 2003cg, 2003du, 2003kf). The photometric observations were performed in a set of intermediate-band filters. SNe 2002er, 2003du appear to be normal SN Ia events with similar light curve shapes, while SN 2003kf shows the behavior of a brighter SN Ia with slower decline rate after maximum. The light curves of SN 2003cg are unusual; they show a fast rise and dramatic decline near maximum and do not display a secondary peak at longer wavelengths during 15-30 days after maximum light. This suggests that SN 2003cg is likely to be an intrinsically subluminous, 91bg-like Type Ia supernova. Exploration of Type Ia supernova line features through intermediate-band photometry is briefly discussed.
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