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[vsnet-campaign-sn 566] classifications of recent SNe in IAUC 8078

Dear SN watchers,

  IAUC 8078 informed the classifications of recent SNe by the CfA

SN 2003ao:
In [vsnet-campaign-sn 559] (Feb. 12):
>SN2003ao  20021202.4 <190:C  KAI
>SN2003ao  20030130.4  173:C  KAI
>SN2003ao  20030210.4  173:C  KAI
># SN 2003ao (9:45:48.46, -14:22:14.0 (J2000.0), offset = 2"E, 8"S) is
># hosted by NGC 2993, a disturbed spiral (Sa pec) galaxy making an
># interacting pair Arp 245 with NGC 2992.  The SN is superimposed on
># the central bulge region.  The expected maximum for typical SN Ia is
># mag about 14.4, but the reported magnitudes suggest it is probably a
># core-collapse event in its plateau phase.

  It is really a type II SN, whose spectrum taken on Feb. 22.30 is
consistent with the plateau phase of normal SN II.

SN 2003ar:
In [vsnet-campaign-sn 561] (Feb. 15):
>SN2003ar  20030123.0  <195C  Bol
>SN2003ar  20030206.162 179C  Bol
>SN2003ar  20030214.142 168C  Bol
># SN 2003ar (16:02:08.11, +70:24:55.5 (J2000.0), offset = 5"E, 6"S) is
># hosted by MCG +12-15-47, which is probably identified with poorly
># coordinated NGC 6071, an early-type (E or S0) galaxy.  The expected
># maximum for typical SN Ia is mag about 16.7.

  A spectrum taken on Feb. 22.50 shows that it is SN Ia two or three
weeks after maximum.  

SN 2003as:
In [vsnet-campaign-sn 561] (Feb. 15):
SN2003as  20030126.0  <190C  Bol
>SN2003as  20030213.909 168C  Bol
>SN2003as  20030124.765 168C  Bol
># SN 2003as (5:28:45.81, +49:52:59.1 (J2000.0), offset = 10"E, 2"S) is
># hosted by MCG +08-10-7, a spiral galaxy near the Galactic plane (b =
># 8o.4).  The expected maximum for typical SN Ia is mag about 17.6 in
># R (the Galactic extinction is introduced according to Schlegel et al.
># (1998)), but unfiltered CCD observation would make a brighter
># magnitude because of the infrared leak.  

  It is turned out to be a type-IIn SN.  It seemd to belong the
luminous class, or "type IIn hypernova".  Followup photometries are
very urged.

SN 2003at:
In [vsnet-campaign-sn 563] (Feb. 17):
>SN2003at  20030215.150  172C  ARM
>SN2003at  20030217.062  172C  ARM
># SN 2003at (16:38:47.81, +66:01:23.7 (J2000.0), offset = 3"E, 13"N)
># is hosted by MCG +11-20-23, a dim spiral? galaxy.  It seems to be
># a foreground galaxy of the cluster Abell 2218.  There is a dim (mag
># about 18) foreground star about 21" due south of the nucleus of MCG
># +11-20-23. 

  It is a somewhat young type-II SN on Feb. 22.52.  

Sincerely Yours,
Hitoshi Yamaoka, Kyushu Univ., Japan

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