[IAUC] CBET 829: 20070202 : SUPERNOVA 2007S IN UGC 5378
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Electronic Telegram No. 829
Central Bureau for Astronomical Telegrams
INTERNATIONAL ASTRONOMICAL UNION
M.S. 18, Smithsonian Astrophysical Observatory, Cambridge, MA 02138, U.S.A.
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SUPERNOVA 2007S IN UGC 5378
M. Jones and M. Hamuy, University of Chile; and G. Folatelli,
Las Campanas Observatory, on behalf of the Carnegie Supernova Project,
report a spectroscopic observation (range 350-530 nm) of 2007S (cf.
CBET 825), obtained on Jan. 31.32 UT with the La European Southern
Observatory 3.5-m New Technology Telescope (+ EMMI spectrograph). This
spectrum closely resembles that of a young type-Ia supernova, although the
limited wavelength coverage does not allow confirmation of the the
presence of absorption due to Si II 635.5-nm. The spectrum is similar
to those of SN 1999ee at one week before maximum light (assuming the
recession velocity of 4161 km/s for the host galaxy; de Vaucouleurs 1991,
Third Reference Catalogue of Bright Galaxies). The blue continuum of the
spectrum suggests that there is no strong reddening.
NOTE: These 'Central Bureau Electronic Telegrams' are sometimes
superseded by text appearing later in the printed IAU Circulars.
(C) Copyright 2007 CBAT
2007 February 2 (CBET 829) Daniel W. E. Green
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