------------------------------------------------------------------- THE ASTRONOMER Electronic Circular No 825 1994 Apr 1 13.39UT Ed:Guy M Hurst, 16,Westminster Close, Kempshott Rise, Basingstoke, Hants, RG22 4PP,England. Telephone/FAX(0256)471074 Int:+44256471074 INTERNET: GMH at AST.STAR.RL.AC.UK or GMH at GXVG.AST.CAM.AC.UK ------------------------------------------------------------------- SUPERNOVAE 1994F, 1994G, 1994H S. Perlmutter, C. Pennypacker, G. Goldhaber, A. Goobar, R.Pain, B. Grossan, A. Kim, M. Kim, and I. Small, Lawrence Berkeley Laboratory and the Center for Particle Astrophysics, Berkeley, report three discoveries from a search for pre-maximum-light, high-redshift supernovae by themselves and R. McMahon, Institute of Astronomy, Cambridge; P. Bunclark, D. Carter, and M. Irwin, Royal Greenwich Observatory; M. Postman and W. Oegerle, Space Telescope Science Institute; T. Lauer, National Optical Astronomy Observatory; and J. Hoessel, University of Wisconsin. Following are given the designation, date of first detection, discovery magnitude and telescope (INT = 2.5-m Isaac Newton Telescope; KPNO = 4-m Kitt Peak telescope), supernova position for equinox 1950.0, offsets from the host galaxy's center, and date of the previous image of the galaxy not showing the supernova (to limiting mag about 24): SN 1994F, Jan. 9, R = 22.0, INT, R.A. = 11h47m25s.15, Decl. = +10o59'38".8, 1".1 west, 0".2 north, 1993 Dec. 22; SN 1994G, Feb.13, I = 21.8, KPNO, R.A. = 10h16m17s.38, Decl. = +51o07'23".5, 1".4 east, 0".1 north, 1994 Jan. 16; SN 1994H, Jan. 8, R = 21.9, INT, R.A. = 2h37m32s.22, Decl. = -1o46'57".5, 1".2 west, 0".1 south, 1993 Dec. 20. IAUC 5956 NOVA CASSIOPEIAE 1993 Further photoelectric photometry by H. Mikuz, Ljubljana, Slovenia Mar. 11.78 UT, V = 15.99 +/- 0.05. IAUC 5957 Editor: This nova, although faint, is well within the limit of those with photographic or CCD capabilities but is currently being neglected during a very important part of its light curve. Although the link with the prototype DQ Herculis is well established, the latter nova was not studied intensively at initial minimum so the present nova presents us with a vital opportunity to learn more about the light curve characteristics of this rare group of novae. T LEONIS Patrick Schmeer, Saarbruecken, Germany e-mails that he has detected T Leonis in outburst as follows: 1994 Mar 29.899UT, 13.5 (Schmeer, 0.20-m T) Confirmed: 1994 Mar 29.916UT, 13.7 (Gary Poyner, Birmingham, UK, 0.40-m refl.) CY URSAE MAJORIS Patrick Schmeer also reports an outburst of CY UMa: 1994 Mar 29.923UT, 12.1 (Schmeer, 0.20-m T) Confirmed: 1994 Mar 29.942UT, 11.8 (Poyner, 0.40-m refl) MAILBOXES Contributors are reminded that the CAVAD box service was closed at the end of March and no further messages should be sent there. A new 'back-up' box is now available at Cambridge with the INTERNET address: GMH at GXVG.AST.CAM.AC.UK. STARLINK users can also reach it using: GXVG::GMH The Cambridge option should ONLY be used if the Rutherford box (from which this circular was issued) cannot be reached. Guy M Hurst --- 00019 --- Date: Sat, 2 Apr 1994 09:03:53 +0100 (BST)