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Circular No. 8452 Central Bureau for Astronomical Telegrams INTERNATIONAL ASTRONOMICAL UNION Mailstop 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://cfa-www.harvard.edu/iau/cbat.html ISSN 0081-0304 Phone 617-495-7440/7244/7444 (for emergency use only) TRANSIENT IN LYNX E. J. Christensen, Lunar and Planetary Laboratory, reports the discovery of a transient starlike object located at R.A. = 8h03m24s.60 +/- 0s.07, Decl. = +38o18'35".9 +/- 0".5 (equinox 2000.0). Nothing is visible within 0'.5 of this position on the Palomar Sky Survey or in the USNO-A2.0 catalogue. Following are red magnitudes derived from the CCD images, taken in the course of the Catalina Sky Survey with the Catalina 0.68-m Schmidt telescope: Dec. 11.4321 UT, [19.5; 11.4436, 15.9; 11.4549, 17.5; 11.4656, 18.2; 11.5073, 19.6; 11.5081, 18.9; 11.5090, 19.1; 11.5099, 19.7. SUPERNOVAE 2004gq AND 2004gr Discoveries of two supernovae have been reported from unfiltered CCD images: SN 2004gq independently by H. Pugh and W. Li (LOSS/KAIT; cf. IAUC 8448) and by F. Manzini (Novara, Italy, 0.4-m telescope; Stazione Astronomica di Sozzago Supernova Search), and SN 2004gr by LOSS. SN 2004 UT R.A. (2000.0) Decl. Mag. Offset 2004gq Dec. 11.36 5 12 04.81 -15 40 54.2 15.5 22".3 E, 22".4 N 2004gr Dec. 11.57 11 26 15.02 +27 52 06.7 17.9 9".2 W, 5".5 N The data for SN 2004gq above are from LOSS; position end figures by R. Behrend (Geneva Observatory) from Manzini's image: 04s.87, 53".6. Manzini adds that nothing is visible at this location on Digitized Sky Survey images or on his earlier images (no dates specified). Additional magnitudes for SN 2004gq: Dec. 4.38 UT, [19.5 (KAIT); 11.93, 15.9 (Manzini); 12.02, 15.9 (Manzini); 12.30, 15.4 (KAIT). KAIT magnitudes for SN 2004gr: May 19.19, [19.5; Nov. 20.58, hint (poor conditions); Dec. 12.58, 17.9. A. V. Filippenko and R. J. Foley, University of California, Berkeley, report that inspection of CCD spectra (range 320-940 nm), obtained on Dec. 12 UT with the Keck I 10-m telescope (+ LRIS), shows that SN 2004gq is probably of type Ic, roughly 4 days before maximum brightness. Its spectrum generally resembles the pre- maximum spectrum of SN 1994I (Filippenko et al. 1995, Ap.J. 450, L11), but there is an additional, weak absorption line at rest wavelength 635 nm that could be attributed H_alpha. The equivalent width of the narrow interstellar Na I D absorption line at 589 nm is about 0.1 nm. Spectra of SN 2004gr show that it is of type II, probably the II-P variety and roughly a month past explosion, given the well-developed P-Cyg profiles of hydrogen Balmer, Fe II, and other lines. (C) Copyright 2004 CBAT 2004 December 12 (8452) Daniel W. E. Green
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