Late Light Curves of Normal Type Ia Supernovae

Details Late Light Curves of Normal Type Ia Supernovae Late Light Curves of Normal Type Ia Supernovae

2006-10-03

arxiv.org/abs/astro-ph/0610084v1

Astron.J.132:2024-2033,2006

Astronomy and Astrophysics

Astrophysics

33 pages, 11 figures, Accepted for publication in The Astronomical Journal

Scientific paper

10.1086/508322

We present late-epoch optical photometry (BVRI) of seven normal/super-luminous Type Ia supernovae: SN 2000E, SN 2000ce, SN 2000cx, SN 2001C, SN 2001V, SN 2001bg, SN 2001dp. The photometry of these objects was obtained using a template subtraction method to eliminate galaxy light contamination during aperture photometry. We show the optical light curves of these supernovae out to epochs of up to ~640 days after the explosion of the supernova. We show a linear decline in these data during the epoch of 200-500 days after explosion with the decline rate in the B,V,& R bands equal to about 1.4 mag/100 days, but the decline rate of the I-band is much shallower at 0.94 mag/100 days.

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