Circular No. 8288

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) BMARSDEN@CFA.HARVARD.EDU or DGREEN@CFA.HARVARD.EDU (science) URL http://cfa-www.harvard.edu/iau/cbat.html Phone 617-495-7244/7440/7444 (for emergency use only)

SUPERNOVA 2004Y

     Further to IAUC 8287, W. Li reports the LOSS discovery, on a
     KAIT image taken on Feb. 12.5 UT, of a supernova (mag 18.5) located
     at R.A. = 11h43m28s.26, Decl. = +21o40'30".3 (equinox 2000.0),
     which is 0".5 east and 3".3 north of the center of the apparent
     host galaxy.  A. V. Filippenko, R. Chornock, and R. J. Foley report
     that inspection of CCD spectra (range 400-1000 nm), obtained on
     Feb. 14 UT with the Keck II 10-m telescope (+ ESI), shows that SN
     2004Y is of type Ia, roughly 3-4 weeks past maximum brightness.
     The redshift of the host galaxy, measured from narrow emission
     lines from H II regions close to the supernova, is 0.0692.

Host galaxy info: vel = 20760 km/s.

SN type info: Ia

------------------------------

Return to KAIT home page