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[vsnet-campaign-sn 631] Possible SN near MCG +07-36-33 is genuine SN Ia

Dear SN watchers,

>PSN2003-MCG+07-36-33 20030522.4  <190:C  KAI
>PSN2003-MCG+07-36-33 20030601.4   186:C  KAI
>PSN2003-MCG+07-36-33 20030602.4   183:C  KAI
>PSN2003-MCG+07-36-33 20030603.4   181:C  KAI
># The object (17:44:07.72, +40:52:51.6 (J2000.0), offset = 10"W, 49"N)
># is near to MCG +07-36-33, a possibly nearby spiral (S?) galaxy.  The
># appearance of the galaxy is rather small, and the new object seems
># to be located too far from the center of the galaxy.  And, if it
># truely belongs to MCG +07-36-33, it is somewhat subluminous for SN
># (M about -14.5).  The spectroscopic type determination is urged.

  The CfA team took a spectrum of a variable object near MCG +07-36-33
on June 5.  It can be seen at:
.  It shows that this object is really SN of type Ia, well before 
maximum.  Si II absorption is shallow, which may indicate that it is a
luminous SN Ia.  And, the recession velocity of this object seems to
be larger than that of MCG +07-36-33 (v_r = 1800 km/s), probably
be as large as 10000 km/s.  The SN may be hosted by a distant galaxy
which cannot be seen on the DSS images.

Sincerely Yours,
Hitoshi Yamaoka, Kyushu Univ., Japan

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