IAUC 7210: 1999cr and 1999cs; 1999ct, 1999cu, 1999cv

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                                                  Circular No. 7210Central Bureau for Astronomical TelegramsINTERNATIONAL ASTRONOMICAL UNIONMailstop 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  ISSN 0081-0304Phone 617-495-7244/7440/7444 (for emergency use only)SUPERNOVAE 1999cr and 1999cs     J. Maza, University of Chile; and M. Hamuy, University ofArizona, report the discovery by R. Antezana of two supernovae on20-min unfiltered T-Max films taken by L. Gonzalez with theUniversity of Chile's Maksutov telescope:SN      1999 UT      R.A.  (2000.0)  Decl.     Mag.     Offset1999cr  Mar. 12.20  13 20 18.30  -20 08 50.5   18.0    7" E, 4" N1999cs  Apr. 14.28  12 04 25.27  -20 06 02.0   17.5    7" SR. C. Smith obtained a spectrogram of SN 1999cr in ESO 576-34 onMar. 17, using the 4-m Blanco telescope at Cerro Tololo, showingthis to be a fairly young type-II supernova at z about 0.01.  M. T.Ruiz and Hamuy obtained BVRI CCD images of SN 1999cs on Apr. 17.146with the Cerro Tololo 0.9-m telescope; a spectrum obtained by M.Phillips on Apr. 23 with the Dupont 2.54-m telescope at LasCampanas Observatory shows SN 1999cs to be a type-Ia supernova nearmaximum light (z = 0.06).SUPERNOVAE 1999ct, 1999cu, 1999cv     A. Gal-Yam and D. Maoz, Tel Aviv University, report for theWise Observatory Optical Transients Search (cf.IAUC 6917,7055)their discovery of three apparent supernovae on unfiltered CCDimages taken with the Wise Observatory 1-m telescope:SN      1999 UT     R.A.  (2000.0)  Decl.    R     Offset1999ct  June 13   13 13 04.56  +46 15 52.7  20.8   2".8 W, 1".0 N1999cu  June 13   13 13 15.42  +46 20 00.8  21.2      --1999cv  June 13   14 34 43.88  +54 44 26.5  20.8      --SNe 1999ct and 1999cu are located in the field of the galaxycluster Abell 1697 (z = 0.183), while SN 1999cv is located in thefield of the galaxy cluster Abell 1936 (z = 0.139).  SNe 1999cu and1999cv are superimposed on compact host galaxies, so no offsets canbe determined from the images.  All three objects were discoveredin frames obtained by Gal-Yam and A. Anter on June 13 and confirmedby Gal-Yam on June 15.  SNe 1999ct and 1999cu were invisible inimages obtained on Feb. 15, while SN 1999cv was invisible in imagesobtained in May 14 with the same telescope (limiting magnitude Rabout 22.0).                      (C) Copyright 1999 CBAT1999 June 29                   (7210)            Daniel W. E. Green

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