[vsnet-alert 5389] SN 2000er in PGC 9132

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

Dear SN watchers,

  According to IAUC 9132, R. Chassagne has discovered his 4th SN in
this year in the southern galaxy PGC 9132 = ESO 115-G009 at mag 15.1.
Congratulations, Robin!  It can be a relatively rare SN Ib with
peculiarity. 

  The position of SN 2000er is reported as R.A. = 2h24m32s.54, Decl. =
-58o26'18".0 (2000.0), and the offset is also reported as 44" east and
16" south of the center of PGC 9132.  These positions are, however,
inconsistent in the R.A. component.  If the offset is correct, the
coordinate of R.A. should be end figures around 34s.4.  About 22" east
of the nucleus, there is a foreground star (rmag about 17).  

  The host galaxy is an edge on spiral (Sab pec sp), and seems to
be interacting with the elliptical galaxy ESO 115-G008 about 2'20" NW
of PGC 9132.  The recession velocity of this pair is about 9300 km/s.

  The spectroscopy has been done at ESO, which reveals that it is
quite peculier object as a SN.  Only the very narrow (\sim 800 km/s)
feature with P-Cyg profile at 607 nm (which can be of He I or Na I) is
detected other than the blue continuum.  It can suggest that it is a
young SN.  Also, it is quite bright: the discovery magnitude is mag
1.5 brighter than normal SNeIa on this distance, and the followup on
ESO (V = 16.7 on Nov. 26.17) is also as bright as the maximum of
SNeIa despite that an usual SN Ib is 1-2 mag dimmer than SNeIa.  The
followup observation of this peculier object is strongly urged.

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

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