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CfA4: 93 Type Ia Supernova Light Curves from the CfA



Malcolm Hicken, Peter Challis, Robert Kirshner, Claire E. Cramer, Armin Rest, W. M. Wood-Vasey, Gaspar Bakos, Perry Berlind, Warren R. Brown, Nelson Caldwell, Michael Calkins, Maria Contreras, Gil Esquerdo, Mark Everett, Emilio Falco, Ted Groner, Matthew J. Holman, Robert Hutchison, Michael Pahre, Wayne Peters, Benjamin Ripman, Timothy Spahr, Andrew Szentgyorgyi, Manuel A. Torres, Amali Vaz


We present multi-band photometry of 93 type-Ia supernovae (SN Ia). Data was acquired with the Keplercam instrument between 2006 and 2011 at the F. L. Whipple Observatory of the Harvard-Smithsonian Center for Astrophysics (CfA). Our natural system SN photometry has a precision of . 0.025 mag in BVr'i' and . 0.05 mag in Uu′ for points brighter than 17.5 mag. We also estimate a systematic uncertainty of 0.02 mag in BVr'i', 0.04 mag for u′ and 0.06 mag for U. Comparisons of our standard system photometry with published SN Ia light curves and comparison stars, where available for the same SN, reveal agreement within two-to-three hundredths mag in most cases.
Astrophysical Journal


light curves, supernovae


Hicken, M. , Challis, P. , Kirshner, R. , Cramer, C. , Rest, A. , Wood-Vasey, W. , Bakos, G. , Berlind, P. , Brown, W. , Caldwell, N. , Calkins, M. , Contreras, M. , Esquerdo, G. , Everett, M. , Falco, E. , Groner, T. , Holman, M. , Hutchison, R. , Pahre, M. , Peters, W. , Ripman, B. , Spahr, T. , Szentgyorgyi, A. , Torres, M. and Vaz, A. (2012), CfA4: 93 Type Ia Supernova Light Curves from the CfA, Astrophysical Journal (Accessed June 16, 2024)


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Created May 16, 2012, Updated October 12, 2021