SIMBAD references

S. Taubenberger and A. Pastorello, Max Planck Institut fuer Astrophysik, Garching, on behalf of the European RTN collaboration (cf. IAUC 7987), report that a spectrum of SN 2005dl (cf. IAUC 8588), obtained on Aug. 30.02 UT by F. Hoyo with the Calar Alto 2.2-m telescope (+ CAFOS; range 340-880 nm), is that of a young type-II supernova. The noisy spectrum is characterized by broad P-Cyg features of the H-Balmer series and another P-Cyg line that can probably be attributed to He I 587.6-nm. Adopting the NED recession velocity of 2410 km/s for the host galaxy (from Strauss et al. 1992, Ap.J. Suppl. 83, 29), the expansion velocity determined from H_beta is about 9200 km/s. Supernova magnitudes estimated from broadband photometry obtained on Aug. 30.10 with the same instrument: B = 18.39 ± 0.20, V = 17.94 ± 0.15, R =17.35 ± 0.12, I = 16.85 ± 0.10 (the errors take into account the uncertainties arising from a heavy contamination of the supernova light by the galaxy background). Host-galaxy extinction might be present, but the S/N of the spectrum is too low to unequivocally detect interstellar Na ID features.