2003IAUC.8109....1H

Further to IAUC 8103, M. Hamuy reports that a spectrum (range 380-930 nm) of SN 2003cv (cf. IAUC 8104), obtained by J. Maza and L. Huerta on Apr. 6.15 UT with the Dupont telescope, shows it to be a peculiar type-II supernova. H_alpha and H_beta lines exhibit very broad P-Cyg profiles; their minima yield expansion velocities of -14000 and -11300 km/s (based on a redshift of 0.028, derived for the host galaxy from superimposed narrow Balmer lines), which are unusually high for type-II events. The spectrum has a broad trough centered at 589.1 nm, probably due to Na I D 589.3-nm, and a P-Cyg profile due to the near-infrared Ca II triplet. This spectrum is very similar to that of the H-rich 'hypernova' SN 2003bg (IAUC 8084, 8088) taken on Apr. 4.04 by Maza and Huerta, and this suggests that SN 2003cv is at least least one month old.