SIMBAD references

N. Morrell, G. Folatelli and M. Hamuy, on behalf of the Carnegie Supernova Project, report spectroscopic observations (range 380-930 nm) of SN 2005dk (cf. IAUC 8586), SN 2005dn (cf. IAUC 8589), and SN 2005el (cf. IAUC 8604) obtained on Sept. 26.00, 26.05, and 26.32 UT, respectively, with the du Pont 2.5-m telescope (+ WFCCD spectrograph) at the Las Campanas Observatory. SN 2005dk is a type-II supernova about one month after explosion. Strong P-Cyg profiles of Balmer lines are present. Spectral lines detected in a spectrum of the host galaxy, IC 4882, were used to derive a redshift of 0.01574. Using this redshift value, an expansion velocity of about 7000 km/s was measured from the absorption minimum of H_beta. SN 2005dn is also of type II, with an age of about one month and very strong H_alpha with P-Cyg profile. The location of the absorption minimum of H_beta yields an expansion velocity of 8600 km/s, if a recession velocity of 3186 km/s is assumed for the host galaxy (Mathewson et al. 1992, Ap.J. Suppl. 81, 413). SN 2005el is a young type-Ia supernova, about five days before maximum light. The spectrum is similar to that of SN 1994D. Assuming a recession velocity of 4470 km/s for the host galaxy (from the de Vaucouleurs et al. 1991 RC3 catalogue), an expansion velocity of 11300 km/s is derived from the absorption minimum of the Si II 635.5-nm doublet.