NASA/IPAC EXTRAGALACTIC DATABASE
Date and Time of the Query: 2019-05-23 T06:42:02 PDT
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For refcode 2009CBET.1667A...1B:
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NED Abstract

Copyright by Central Bureau for Astronomical Telegrams. 2009CBET.1667A...1B Supernova 2009H In NGC 1084 Electronic Telegram No. 1667 Central Bureau for Astronomical Telegrams INTERNATIONAL ASTRONOMICAL UNION Benetti, S.; Valenti, S.; Magazzu, A.; Harutyunyan, A. Abstract. SUPERNOVA 2009H IN NGC 1084 S. Benetti, Istituto Nazionale di Astrofisica, Osservatorio Astronomico di Padova; S. Valenti, Belfast University; and A. Magazzu and A. Harutyunyan, Telescopio Nazionale Galileo (TNG), report that a spectrum of 2009H (cf. CBET 1656), obtained on Jan. 19.95 UT with the 3.5-m TNG (+ DOLORES; range 400-900 nm, resolution 1.0 nm), shows it to be that of a highly reddened type-II supernova about one week after explosion. The best fit to this spectrum found by GELATO (Harutyunyan et al. 2008, A.Ap. 488, 383) is with early spectra of SN 2005cs at several days after explosion (Pastorello et al. 2006, MNRAS 370, 1752). The expansion velocity, deduced from the H-{alpha} FWHM, is about 11500 km/s. E. Prosperi, Castelmartini, Italy, reports unfiltered CCD magnitude 16.8 for SN 2009H on Jan. 16.857 UT (0.35-m f/10 Schmidt-Cassegrain reflector). NOTE: These 'Central Bureau Electronic Telegrams' are sometimes superseded by text appearing later in the printed IAU Circulars. (C) Copyright 2009 CBAT 2009 January 20 (CBET 1667) Daniel W. E. Green
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