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[vsnet-campaign-sn 580] SNe information from IAUC 8091



Dear SN watchers,

  IAUC 8091 reported the classifications of several recent SNe.
Belows are what has not been introduced in vsnet-campaign-sn ML
previously. 

SN 2003bt:
In [vsnet-campaign-sn 578] (Mar. 11)
>SN2003bt  20030202.4 <185C  SCH
>SN2003bt  20030309.3  167C  SCH
>SN2003bt  20030310.3  167C  SCH
>
># SN 2003bt (10:55:22.48, -7:39:12.3 (J2000.0), offset = 12" due west)
># is hosted by MCG -01-28-006, a face-on barred-spiral galaxy.  The
># new object is superimposed on the western arm.  There is a
># foreground star (USNO-A2.0 red mag 18.4) about 22" due west of the
># nucleus of MCG -01-28-006,  so the new object lies a midway of the
># nucleus and the foreground star.  The expected maximum for typical
># SN Ia is consistent with the discovery magnitude.

  The CfA team revealed that it is a type Ia SN about 2 weeks after
maximum on Mar. 11.25.

  The NED gives an essential note as: "MCG decs for MCG -01-28 field
are 10 arcmin too far north (MCG4 errata)".  The NED supplies the
correct position. 

SN 2003br:
In [vsnet-campaign-sn 576] (Mar. 9)
>SN2003br  20020701.3  <190:C  KAI
>SN2003br  20030307.5   174:C  KAI
>SN2003br  20030308.5   174:C  KAI
>
># SN 2003br (14:34:34.98, -27:59:48.8 (J2000.0), offset = 2"W, 5"N) is
># hosted by MCG -05-34-18, a tilted spiral (SAB(rs)cd:) galaxy.  The
># expected maximum for typical SN Ia is mag about 15.5.

  A spectrum taken on Mar 11.47 by the CfA team revealed that it is a
type II SN.

SN 2003bp:
In [vsnet-campaign-sn 579] (Mar. 11):
>  The CfA team reports the classifications of two recent SNe on their
>Web page:
>...
>  A spectrum taken on Mar. 10 revealed that it is type Ib supernova,
>but the He line is weaker than normal SN Ib.  They suggest that it
>would be a transitional object between SN Ib and Ic.

  The LBNL team also report that a spectrum taken on Mar 8.22 shows it
to be an early SN Ib with somewhat weaker He lines.

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


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