Electronic Telegram No. 2242
Central Bureau for Astronomical Telegrams
INTERNATIONAL ASTRONOMICAL UNION
CBAT Director:  Daniel W. E. Green; Room 209; Dept. of Earth and Planetary
 Sciences; Harvard University; 20 Oxford St.; Cambridge, MA  02138; U.S.A.
e-mail:  cbat@iau.org; cbatiau@eps.harvard.edu
URL http://www.cfa.harvard.edu/iau/cbat.html


SUPERNOVA 2010as IN NGC 6000
     S. Ryder and R. Covarrubias, Anglo-Australian Observatory; S. Amy,
Australia Telescope National Facility; M. Argo, Curtin University of
Technology; C. Stockdale, Marquette University; S. Van Dyk, Spitzer
Science Center, California Institute of Technology; S. Immler, Goddard
Space Flight Center; K. Weiler, Naval Research Laboratory; and N. Panagia,
Space Telescope Science Institute and Observatory of Catania, report the
detection of radio emission near the position of the type-Ib/c supernova
2010as (cf. CBETs 2215, 2221) with the Australia Telescope Compact Array
radio telescope.  Flux density measurements were made at 9.0 GHz of 1.45
+/- 0.09 mJy on March 27.8 UT, and 1.48 +/- 0.08 mJy on April 3.7.  Only a
3-sigma upper limit of 0.14 mJy at 5.5 GHz was measured at the earlier
epoch, but at the latter epoch a source of 1.40 +/- 0.10 mJy was found.
The measured position of the radio emission of R.A. = 15h49m49s.24, Decl. =
-29o23'10".0 (equinox 2000.0) is in good agreement with the measured
optical position end figures 49s.23, 09".7 (CBET 2215).  The radio emission
has likely already peaked at 9.0 GHz but should soon start increasing
rapidly at longer radio wavelengths.  Radio observations at the Australia
Telescope Compact Array are continuing.


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      superseded by text appearing later in the printed IAU Circulars.

                         (C) Copyright 2010 CBAT
2010 April 15                    (CBET 2242)              Michael Rudenko