Electronic Telegram No. 1840
Central Bureau for Astronomical Telegrams
INTERNATIONAL ASTRONOMICAL UNION
M.S. 18, Smithsonian Astrophysical Observatory, Cambridge, MA 02138, U.S.A.
IAUSUBS@CFA.HARVARD.EDU or FAX 617-495-7231 (subscriptions)
CBAT@CFA.HARVARD.EDU (science)
URL http://www.cfa.harvard.edu/iau/cbat.html


SUPERNOVA 2009gb IN ESO 447-37
     G. Pignata, J. Maza, M. Hamuy, R. Antezana, L. Gonzalez, P. Gonzalez, P.
Lopez, S. Silva, G. Folatelli, D. Iturra, R. Cartier, F. Forster, S. Marchi,
and A. Rojas, 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 14.9 +/- 0.1)
on unfiltered images taken on June 9.20 and 9.97 UT with the 0.41-m 'PROMPT 4'
telescope located at Cerro Tololo.  The new object is located at R.A. =
14h47m25s.83 +/- 0".1, Decl. = -30o39'02".5 +/- 0".1 (equinox 2000.0), which
is about 10".8 west and 19".6 south of the center of the galaxy ESO 447-37.
Nothing is visible at this position on archival images taken on Mar. 25.35
(limiting mag 18.5) and Apr. 28.19 (limiting mag 19.0).  ESO 447-37 was also
the host galaxy of the type-Ia supernova 2009as (cf. CBETs 1717, 1723).


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      superseded by text appearing later in the printed IAU Circulars.

                         (C) Copyright 2009 CBAT
2009 June 10                     (CBET 1840)              Daniel W. E. Green