[vsnet-campaign-sn 558] SNe classifications

[Hitoshi YAMAOKA <yamaoka@rc.kyushu-u.ac.jp>]

Dear SN watchers,

  The CfA team has taken spectra of recent SNe, which can be seen at:
http://cfa-www.harvard.edu/cfa/oir/Research/supernova/RecentSN.html

SN 2003af:
In [vsnet-campaign-sn 555] (Feb. 9):
>SN2003af  20030203.56  156C  PAL
>SN2003af  20030203.57  156C  PAL
>SN2003af  20030207.0   157C  PAL
>
># A host galaxy of SN 2003af (11:10:21.69, +23:24:50.9 (J2000.0),
># offset = 4"E, 2"S) is 2MASXi J1110213+232453, a dim galaxy.  The SN
># is also seen on the images taken on Jan. 19 (magnitude was not
># given).  It seems to be a enough bright SN to easily follow-up.

  It is type Ia supernova, near maximum on Feb. 9.

SN 2003ag:
In [vsnet-campaign-sn 556] (Feb. 10):
>SN2003ag  20021227.4  <190:C  KAI
>SN2003ag  20030207.5   165:C  KAI
>SN2003ag  20030208.3   163:C  KAI
>
># A host galaxy of SN 2003ag (11:26:01.82, +1:59:02.8 (J2000.0),
># offset = 12" due east) is UGC 6440, a barred-spiral (SB(rs)bc)
># galaxy.  The SN is located between bright arms.  The reported
># maxnitude is consistent with the expected maximum for typical SN Ia.

  It is also a type Ia supernova, near maximum on Feb. 9.

SN 2003ai:
In [vsnet-campaign-sn 556] (Feb. 10):
>SN2003ai  20020616.3  <190:C  KAI
>SN2003ai  20030208.5   170:C  KAI
>SN2003ai  20030209.3   169:C  KAI
>
># A host galaxy of SN 2003ai (13:00:58.68, +39:51:24.5 (J2000.0),
># offset = 8" due south) is IC 4062, an apparent elliptical(?) galaxy
># and a probable member of the cluster AWM 6. The discovery magnitude
># is consistent with (but possibly slightly brighter than) the
># expected maximum for typical SN Ia.

  It is type Ia supernova about a week before the maximum on Feb. 10.
It seems to be possibly a luminous event, judged from the strength
of Si II 635 nm absorption.

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

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