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Shahbandeh, N. B. Suntzeff, N. Morrell, P. E. Nugent, P. Hoeflich, P. J. Brown, P. Mazzali, R. P. Kirshner, S. Castell\\'on, S. Davis, S. E. Persson, S. Holmbo, S. Kumar, T. Morokuma, W. L. Freedman","submitted_at":"2021-06-23T03:32:53Z","abstract_excerpt":"We present a multi-wavelength photometric and spectroscopic analysis of thirteen \"Super-Chandrasekhar Mass\"/2003fg-like type Ia Supernova (SNe~Ia). Nine of these objects were observed by the Carnegie Supernova Project. 2003fg-like have slowly declining light curves ($\\Delta m_{15}$(B) $<$1.3 mag), and peak absolute $B$-band magnitudes between $-19<M_{B}<-21$~mag. Many 2003fg-like are located in the same part of the luminosity width relation as normal SNe~Ia. In the optical $B$ and $V$ bands, 2003fg-like look like normal SNe~Ia, but at redder wavelengths they diverge. 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