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UBVRI Light Curves of 44 Type Ia Supernovae

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arxiv astro-ph/0509234 v1 pith:6HKIK7L5 submitted 2005-09-08 astro-ph

Saurabh Jha , Robert P. Kirshner , Peter Challis , Peter M. Garnavich , Thomas Matheson , et al This is my paper
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keywords lightcurvesdeclineobservedrateu-bandbandsother
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We present UBVRI photometry of 44 type-Ia supernovae (SN Ia) observed from 1997 to 2001 as part of a continuing monitoring campaign at the Fred Lawrence Whipple Observatory of the Harvard-Smithsonian Center for Astrophysics. The data set comprises 2190 observations and is the largest homogeneously observed and reduced sample of SN Ia to date, nearly doubling the number of well-observed, nearby SN Ia with published multicolor CCD light curves. The large sample of U-band photometry is a unique addition, with important connections to SN Ia observed at high redshift. The decline rate of SN Ia U-band light curves correlates well with the decline rate in other bands, as does the U-B color at maximum light. However, the U-band peak magnitudes show an increased dispersion relative to other bands even after accounting for extinction and decline rate, amounting to an additional ~40% intrinsic scatter compared to B-band.

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Cited by 2 Pith papers

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