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[vsnet-campaign-sn 574] SNe information from IAUC 8088

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

  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

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