Late light curves of normal Type Ia supernovae

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

Research output: Contribution to journalArticle

37 Citations (Scopus)

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 2006

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light curve
photometry
supernovae
explosion
time measurement
explosions
novae
extremely high frequencies
subtraction
contamination
templates
apertures
galaxies
rate
method

Keywords

  • Supernovae: general

ASJC Scopus subject areas

  • Space and Planetary Science
  • Astronomy and Astrophysics

Cite this

Late light curves of normal Type Ia supernovae. / Lair, Jessica C.; Leising, Mark D.; Milne, Peter A.; Williams, George G.

In: Astronomical Journal, Vol. 132, No. 5, 11.2006, p. 2024-2033.

Research output: Contribution to journalArticle

Lair, JC, Leising, MD, Milne, PA & Williams, GG 2006, 'Late light curves of normal Type Ia supernovae', Astronomical Journal, vol. 132, no. 5, pp. 2024-2033. https://doi.org/10.1086/508322
Lair, Jessica C. ; Leising, Mark D. ; Milne, Peter A. ; Williams, George G. / Late light curves of normal Type Ia supernovae. In: Astronomical Journal. 2006 ; Vol. 132, No. 5. pp. 2024-2033.
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