[vsnet-campaign-sn 264] SN 2001ez in PGC 17642

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

Dear SN watchers,

  As reported on IAUC 7736, the KAIT team has discovered a SN in the
apparent satellite galaxy of NGC 1961.  The expected maximum for SN Ia
is mag about 15.3. 

  The magnitude at the discovery (Oct. 17.5) was mag 17.8, and it
appeared 0.2 mag brighter on the next day.  The position of a new
object is R.A. = 5h42m37s.64, Decl. = +69o14'14".6 (2000.0), which is
about 4" east and 2" north of the nucleus of the spiral (S/Irr) galaxy
PGC 17642 = CGCG 329-009.  There are several foreground stars, but the
SN is the nearest to the nucleus.  

  PGC 17642 is thought to be a satellite galaxy of a large spiral
galaxy NGC 1961.  PGC 17642 lies about 8'.5 south-southeast of NGC
1961, which has produced SN Ia 1998eb (also discovered by the KAIT). 
It was caught at mag about 17.8, when it was three to four weeks after
maximum light.  If SN 2001ez is of type Ia and unreddened, it can
reach mag 15.3 or so, estimated from the recession velocity of the
host galaxy.  Further monitoring and the spectral confirmation is
needed.

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

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