Return to Home Page
SN2003bn 20030221.0 <210C NEM SN2003bn 20030222.33 202C NEM SN2003bn 20030227.48 167C NEM SN2003bn 20030228.38 167C NEM SN2003bn 20030306.13 167:V LCO # SN 2003bn (10:02:35.51, -21:10:54.5 (J2000.0), offset = 3"E, 1"S) is # hosted by 2MASXi J1002353-211052, a dim edge-on (?) galaxy. SN 2003bg: SN 2003bg: In [vsnet-campaign-sn 570] (Mar. 1): >>SN2003bg 20021107.0 <180:C CHA >>SN2003bg 20030225.7 150:C CHA >>SN2003bg 20030226.6 150:C CHA >> >># SN 2003bg (4:10:59.42, -31:24:50.3 (J2000.0), offset = 16"W, 24"S) >># is hosted by MCG -05-10-15, a nearby barred-spiral (SB(s)c) galaxy. >># The expected maximum for typical SN Ia is mag about 13.0(!), but >># considering that it has remained constant for one day, it seems not >># in the rapid rising phase. Anyway, further photometry and spectral >># classification is urged. > > The UCB team suggest that its spectrum resembles to that of peculiar >type Ic SN (or type-Ic hypernova) about 2 weeks after explosion! SN >2003bg is quite nearby object (comparable to the Virgo cluster), the >followup magnitude estimates and drawing the light curve is >encouraged. The Las Campanas spectrum taken on Mar. 4 shows the presence of strong and very broad hygrogen Balmar lines with P-Cyg profile. The expansion velocity, deduced from absorption minima, is around 15000 km/s, which is well larger than that of normal SN II. It seems very remarkable event; it can be said that it is "type II hypernova" discovered for the first time. The followup magnitude estimates are extremely encouraged! Sincerely Yours, Hitoshi Yamaoka, Kyushu Univ., Japan yamaoka@rc.kyushu-u.ac.jp
Return to the Powerful Daisaku
vsnet-adm@kusastro.kyoto-u.ac.jp
