Return to Home Page
Date: Sun, 16 May 93 10:10:43 CDT From: gav@astro.as.utexas.edu (Gerard de Vaucouleurs) Subject: SN1993J >From G. de Vaucouleurs (gav@astro.as.utexas.edu) (5.05.93)(*5.15.93) W. Wren (McDonald Obs.) communicates the following visual observations of SN1993J made with his 60-cm reflector by reference to the Thompson-Bryan Chart for M81. JD.... mv JD.... mv JD.... mv JD.... mv JD .... mv 077.63 10.5: 078.64 10.5 079.65 10.6 80.68 11.2 81.77 11.9 082.69 12.0 084.73 11.6 085.67 11.7 086.71 12.0 087.68 11.7 088.67 11.7 089.62 11.5 093.62 11.1 095.66 11.0 096.61 11.1 097.67 11.1 098.65 11.1 101.63 11.4 102.65 11.4 106.79 11.7 108.62 11.8 109.63 11.8 110.70 12.0 112.67 12.4 113.63 12.5* 115.65 12.8* 118.68 12.8* 120.62 12.9* 121.75 12.4* 122.67 12.7* 123.65 12.9* By comparison with a provisional pe+CCD-based V-band mean light curve I find the following mean corrections to reduce the above mv to V: March 31 to April 3 (JD 77.63 to 80.68) <V-mv> = +0.53 (n=4, s.d.= 0.21) April 4 to April 8 (81.77 to 85.67) = -0.04 (n=4, s.d.= 0.12) April 9 to April 12 (86.71 to 89.62) = -0.38 (n=4, s.d.= 0.06) April 16 to May 5 (93.62 to 112.67) = -0.16 (n=12, s.d.= 0.12) May 6 to May 16 (113.63 to 123.65) = -0.53 (n=7, s.d.= 0.21)* ******************************************************************************
Return to the Powerful Daisaku Nogami
vsnet-adm@kusastro.kyoto-u.ac.jp
