Abstract:
We present BVR ̜ I ̜ broad-band CCD photometry of the Type Ia supernove SN 2004S, which appeared in the galaxy MCG-05-16-021, obtained during 2004 February 12 to March 22. We present multiband and bolometric light curves constructed using our data as well as other available data. The tine of the B- band maximum and the peak magnitudes in different bands are obtained using fits of light-curve and colour template. We clearly see a strong shoulder in the Rc band and a second maximum in the Ic band. SN 2004S closely resembles SN 1992al after maximum. From the peak bolometric luminosity, we estimate the ejected mass of ⁵⁶Ni to be 0.41 Mʘ.
