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[vsnet-campaign-sn 540] SNe information from IAUC 8051



SN2002kg  19981113.0 <195:C  KAI
SN2002kg  20021026.0  190:C  KAI
SN2002kg  20021030.0  190:C  SCH
SN2002kg  20021101.0  190:C  KAI
SN2002kg  20021114.0  190:C  SCH
SN2002kg  20021122.0  190:C  SCH
SN2002kg  20021124.0  190:C  SCH
SN2002kg  20021125.0  190:C  SCH
SN2002kg  20021202.0  190:C  KAI
SN2002kg  20021208.0  190:C  SCH
SN2002kg  20030101.0  190:C  SCH

# A host galaxy of SN 2002kg (7:37:01.83, +65:34:29.3 (J2000.0),
# offset = 62"E, 96"S) is a nearby (about 3.5 Mpc) spiral (SAB(s)cd 
# HII) galaxy NGC 2403.  This object is quite dim, so the
# identification would be very difficult.  The UCB team spectrum
# reveals that it is type IIn supernova, resembling SNe 1997bs or
# 2000ch, which have been suggested to be a superoutburst of the
# luminous blue variables, like eta Car.  The absolute magnitude of SN
# 2002kg is now about -8, which is even lower than that of SN 2000ch
# or resembling SN IIn (around -12 at its short-lived maximum).  SN
# 2000ch was caught in the "premaximum halt" during a few years until
# its maximum (see IAUC 7415, 7417, 7419, and 7421), so possibly SN
# 2002kg will become brighter.  Interestingly, SN 1954J in the same
# galaxy NGC 2403 (maximum B=16.5) was also very dim SN, and Smith et
# al. 2001, PASP, 113, 692 suggest that SN 1954J is of this class.

SN 2002hz:
In [vsnet-campaign-sn 507] (02 Nov 18!):
>SN2002hz  20021102.2  <190:C  KAI
>SN2002hz  20021112.2   184:C  KAI
>SN2002hz  20021116.2   178:C  KAI
>
># UGC 12044, a host galaxy of SN 2002hz (22:27:49.54, +38:35:09.5
># (J2000.0), offset = 14"E, 3"S), is an edge-on spiral (Sab) galaxy
># with low galactic latitude (b=-16o).  The expected maximum for
># typical SN Ia (without a reddening in the host galaxy) is mag about
># 16.3, but judged from the reports (0.6 mag rise in 4 days), it is
># possibly a reddened (or subluminous) SN Ia or a core-collapse event.

A spectrum taken by the UCB team on Jan. 7 suggest that it is type Ib
SN roughly 2 months after maximum light.  

Sincerely Yours,
Hitoshi Yamaoka, Kyushu Univ., Japan
yamaoka@rc.kyushu-u.ac.jp

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