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Received................; accepted................ We present V RIJHK photometry, and optical and near-infrared spectroscopy, of the heavily extinguished Type Ia supernova (SN) 2002cv, located in NGC 3190, which is also the parent galaxy of the Type Ia SN 2002bo. SN 2002cv, not visible in the blue, has a total visual extinction of 8.74 ±0.21 mag. In spite of this we were able to obtain the light curves between −10 and +207 days from the maximum in the I band, and also to follow the spectral evolution, deriving its key parameters. We found the peak I-band brightness to be Imax = 16.57±0.10 mag, the maximum absolute I magnitude to be Mmax I = −18.79 ±0.20, and the parameter ∆m15(B) specifying the width of the B-band light curve to be 1.46 ± 0.17 mag. The latter was derived using the relations between this parameter and ∆m40(I) and the time interval ∆tmax(I) between the two maxima in the I-band light curve. As has been found for previously observed, highly extinguished SNe Ia, a small value of 1.59 ± 0.07 was obtained here for the ratio RV
Elias–Rosa et al. (Thu,) studied this question.
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