2004IAUC.8359....1C

Further to IAUC 8302, A. Connolly reports the discovery by the 'SDSS Collaboration' of several supernovae, detected during its spectroscopic survey operations in 45-min-exposure spectra (range approximately 380-920 nm) taken with the SDSS multi-fiber spectrograph (with a field diameter of 3"). The positions given for the supernovae below are those of the fiber center; each supernova is at the center of its host galaxy, except for SN 2004ck, which is 7" east and 8" north of its host's center. Each supernova was identified by subtracting the underlying galaxy spectrum and then fitting supernova spectral templates to estimate the age of the supernova. The r magnitudes (on the AB system; cf. Fukugita et al. 1996, A.J. 111, 1748) for each supernova are estimated after subtracting the galaxy component. Also given below is the type and age (time in days after maximum; typical uncertainty ± 5 days) for each supernova. Redshifts for the host galaxies (consistent with those measured for the supernovae): 2004cj, 0.102; 2004ck, 0.029; 2004cl, 0.112; 2004cm, 0.005; 2004cn, 0.024; 2004co, 0.028; 2004cp, 0.054; 2004cq in UGC 9882, 0.022. SN 2004 UT R.A. (2000.0) Decl. r Type (Age) 2004cj Jan. 29.34 10 22 50.12 +11 42 10.8 20.1 Ia (-3) 2004ck Feb. 26.17 10 14 35.20 +11 52 05.7 19.8 Ia (+69) 2004cl Mar. 20.11 8 29 33.47 + 8 52 05.4 21.5 Ia (-4) 2004cm Mar. 24.46 14 07 24.96 +55 06 11.0 18.8 II (+21) 2004cn Apr. 17.27 12 27 28.11 +42 20 28.6 21.1 Ia (+43) 2004co Apr. 17.38 13 28 34.01 +41 51 08.2 17.4 Ia (+7) 2004cp May 24.21 15 40 24.76 +32 51 57.2 19.6 Ia (+28) 2004cq May 24.26 15 31 19.76 +40 16 52.1 17.5 Ia (+27)