2004IAUC.8379....1S -
IAU Circ., 8379, 1 (2004/August-0)
Supernova 2004dj in NGC 2403.
STOCKDALE C.J., SRAMEK R.A., WEILER K.W., VAN DYK S.D., PANAGIA N., POOLEY D., LEWIN W. and MARCAIDE J.M.
Abstract (from CDS):
C. J. Stockdale, Marquette University; R. A. Sramek, National Radio Astronomy Observatory; K. W. Weiler, Naval Research Laboratory; S. D. Van Dyk, Infrared Processing and Analysis Center, California Institute of Technology; N. Panagia, European Space Agency and Space Telescope Science Institute; D. Pooley and W. Lewin, Massachusetts Institute of Technology; and J. M. Marcaide, University of Valencia, report the detection of radio emission from the type-IIP supernova 2004dj (IAUC 8377, 8378) with the Very Large Array (VLA) of the National Radio Astronomy Observatory, with a radio-flux density of 1.77 ± 0.13 mJy at 8.46 GHz (wavelength 3.6 cm) and upper limits (3 sigma) of 1.4 mJy at 22.46 GHz (wavelength 1.3 cm) and 2.9 mJy at 43.34 GHz (wavelength 0.7 cm) on Aug. 2.9 UT in D configuration. The 8.46-GHz detection was measured at the following position: R.A. = 7h37m16s.916, Decl. = +65o35'56".97 (equinox 2000.0; ± 0".2 in each coordinate). This is in close agreement with the reported optical position (IAUC 8377). Previous observations of NGC 2403 on 2003 Jan. 31 showed no radio emission near the supernova position, with upper limits (3 sigma) of 0.41 mJy at 8.4 GHz and 0.31 mJy at 22.5 GHz. VLA monitoring of this source is continuing.
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