SUPERNOVA 2009au IN ESO 443-21
G. Pignata, J. Maza, M. Hamuy, R. Antezana, L. Gonzalez, P. Gonzalez, P. Lopez, S. Silva, G. Folatelli, D. Iturra, R. Cartier, F. Forster, and S. Marchi, Universidad de Chile; B. Conuel, Wesleyan University; and D. Reichart, K. Ivarsen, A. Crain, D. Foster, M. Nysewander, and A. LaCluyze, University of North Carolina at Chapel Hill, on behalf of the CHASE project, report the discovery of an apparent supernova (mag approximately 16.4 +/- 0.2) on an unfiltered image taken on Mar. 11.17 UT with the 0.41-m 'PROMPT 4' telescope located at Cerro Tololo. The new object, which is also present in an image taken on Mar. 12.15 at mag approximately 16.2 +/- 0.2, is located at R.A. = 12h59m46s.00 +/- 0".1, Decl. = -29o36'07".5 +/- 0".1 (equinox 2000), which is about 1".4 east and 7".0 south of the center of the galaxy ESO 443-21. Nothing is visible at this position on archival images taken on Feb. 24.18 (limiting mag 18.5) and Mar. 3.15 (limiting mag 17.5).

NOTE: These 'Central Bureau Electronic Telegrams' are sometimes superseded by text appearing later in the printed IAU Circulars.

2009 March 13

(C) Copyright 2009 CBAT (CBET 1719)

Daniel W. E. Green