SIMBAD references

Two supernovae have been discovered on unfiltered CCD survey images: 2006at by B. Dintinjana and H. Mikuz, Crni Vrh Observatory, on four frame taken with a 0.60-m f/3.3 Cichocki reflector in the course of their 'Comet and Asteroid Search Program' (PIKA); and 2006au by O. Trondal, P. Luckas, and M. Schwartz with the 0.35-m Tenagra telescope in Oslo (cf. IAUC 8674). SN 2006 UT R.A. (2000.0) Decl. Mag. Offset 2006at Mar. 8.055 13 12 41.11 +63 16 45.4 17.1 8".0 E, 10".5 N 2006au Mar. 7.20 17 57 13.56 +12 11 03.2 17.2 17".0 W, 18".2 N H. Yamaoka, Kyushu University; and H. Naito and N. Tokimasa, Nishi- Harima Astronomical Observatory, report that a rather noisy, low- resolution spectrum (range 420-690 nm; R = 1000 at 500 nm) taken of 2006at on Mar. 8.8 UT with the 2.0-m NAYUTA telescope shows a rather featureless blue (blackbody-like) continuum with possible very broad features (either absorption valleys or emission troughs, which suggests that it may be a very young supernova. Additional approximate magnitudes for 2006at: 1993 Mar. 19 UT, [19.6 (Digital Sky Survey, blue); 1997 Apr. 13, [20 (DSS, red); 2006 Feb. 12.074, [18.5 (PIKA R-band); Mar. 8.8, 16.7 (Yamaoka et al., slit-viewer unfiltered image). The host galaxy of 2006at is hard to identify on the DSS image because it is very diffuse; a SDSS color-composite image taken in 2001 also shows no point source down to mag about 21. Additional approximate magnitudes for 2006au in UGC 11057: 2004 Sept. 17.15, [19.5; 2006 Mar. 10.65 UT, 17.4. The "Nearby Supernova Factory" collaboration reports that SN 2006au is a type-II supernova (details on CBET 427).