Intermediate-band Photometry of Type Ia Supernovae
Abstract
We present optical light curves of five Type Ia supernovae (2002er, 2002fk, 2003cg, 2003du, 2003fk). 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 is unusual; they show a fast rise and dramatic decline near maximum and do not display 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 SN Ia. Exploration of SN Ia feature lines through intermediate-band photometry is briefly discussed.
Cite
@article{arxiv.astro-ph/0409375,
title = {Intermediate-band Photometry of Type Ia Supernovae},
author = {Xiaofeng Wang and Xu Zhou and Tianmeng Zhang and Zongwei Li},
journal= {arXiv preprint arXiv:astro-ph/0409375},
year = {2007}
}
Comments
3pages+2figures, in: Supernovae as Cosmological Lighthouses Padua, June 16- 19, eds. Turatto et al., ASP Conference Series