Late light curves of normal Type Ia supernovae

Jessica C. Lair, Mark D. Leising, Peter A. Milne, G. Grant Williams

Research output: Contribution to journalArticle

37 Scopus citations

Abstract

We present late-epoch optical photometry (BVRI) of seven normally luminous and superluminous Type la super-novae: SN 2000E, SN 2000ce, SN 2000cx, SN 2001C, SN 2001V, SN 2001bg, and 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, and R bands equal to about 1.4 mag per 100 days, but the decline rate of the I-band is much shallower at 0.94 mag per 100 days.

Original languageEnglish (US)
Pages (from-to)2024-2033
Number of pages10
JournalAstronomical Journal
Volume132
Issue number5
DOIs
StatePublished - Nov 1 2006

Keywords

  • Supernovae: general

ASJC Scopus subject areas

  • Astronomy and Astrophysics
  • Space and Planetary Science

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