[vsnet-alert 7242] SN Ia 2002bo in NGC 3190

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

Dear SN watchers,

  The nearby SN was discovered on Mar. 9.08 UT, and revealed to be of
type Ia well before maximum on Mar. 3.6.  The expected maximum for
typical SN Ia is mag about 12.6, but it seems to be reddened.

  According to IAUC 7847, SN 2002bo was discovered on Mar. 9.08 UT by
Brazillian amateur Paulo Cacella, and confirmed by the KAIT team on
Mar. 9.4 UT.  The independent discovery is reported by Yoji Hirose,
the discoverer of SN 2002ap.  The position of the new object (KAIT
meaturement) is: R.A. = 10h18m06s.52, Decl. = +21o49'41".2 (2000.0), 
which is about 11" east and 14" south of the edge-on interacting
spiral (SA(s)a pec sp LINER) galaxy NGC 3190.  SN is nearly
superimposed on the dark lane. 

  The KAIT team reported that the new object cannot be seen on the
image taken on Mar. 2.4 (limiting mag about 19.0), which indicate that
it is a quite fresh SN.  On the other hand, they noted the redness of
this object; which suggests that it should be reddened by interstellar
medium.  Indeed, the spectrum taken at Gunma on Mar. 9.6 UT revealed
that it is of type Ia about two weeks before maximum light, and is
highly reddened.  Such quick confirmation and spectroscopy are surely 
realized by the open exchange of the informations.

  NGC 3190 is as near as the Virgo cluster, and the expected maximum
for typical unreddened SN Ia is mag about 12.6.  SN 2002bo is,
however, highly reddened, so the maximum would be around mag 14 on
late March.  The follow-up photometry and observation at any
wavelength is highly urged for this nearby SN.

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

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