[vsnet-campaign-sn 376] SN Ic 2002bm and a peculiarity of SN Ia 2002bo

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

Dear SN watchers,

  IAUC 7848 and 7849 report several spectral observation of recent
SNe. 

SN 2002bm:

In [vsnet-obs 38851]:
># MCG -01-32-19 = the host galaxy of SN 2002bm is a face-on
># barred-spiral (SB(r)bc pec) galaxy.  The expected maximum for
># typical SN Ia is mag about 16.1.

  This SN was turned out to be of type Ic (CfA group). 

SN 2002bo:

In [vsnet-campaign-sn 373]:
> 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. 

  Other than Gunma observation, the Asiago group and the CfA group
reported the spectrum with the same conclusion.  The CfA group notes
about the narrow Na I D absorption (EW = 0.3 nm) at the velocity of
the host galaxy, which indicates the large reddening.  They also quote
about the Ti absorption features, which suggest that it may be a
subluminous SN Ia.  The followup photometry is quite encouraged,
because it would greatly help the research for the SNe Ia of
subluminous class.  

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

VSNET Home Page

---

vsnet-adm@kusastro.kyoto-u.ac.jp

VSNET Home Page

Return to Daisaku Nogami

---

vsnet-adm@kusastro.kyoto-u.ac.jp