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SN2003dv 20030314.5 <185C SCH SN2003dv 20030317.4 <185C SCH SN2003dv 20030422.4 162C SCH SN2003dv 20030423.4 162C SCH In [vsnet-campaign-sn 609] (Apr. 24): > IAUC 8121 informed the discovery of apparent supernova (mag 16.2) in >UGC 9638. The position of the object is reported as 14:58:04.92, >+58:52:49.9, which is about 38" west and 32" north of the center of an >irregular galaxy UGC 9638. But IAUC also noted that there is an >USNO-A2.0 star about 3" from this position. > > I quickly see the catalogs. >USNO-A2.0 14 58 04.548 +58 52 49.19 r=18.2 b=19.6 epoch=1955.205 >GSC-2.2 14 58 04.504 +58 52 49.27 r=18.35 b=- epoch=1995.155 > > Unfortunately 2MASS doesn't contain this star. > > If the position difference between these catalogs is reflection of >the proper motion, it seems to consistent that this USNO-A2.0 star is >positionally coincident with the reported object. > > Because I am out of office in some days, I can't study further. >Please give further comments whoever possible. IAUC 8124 informed that the INT spectrum of this object taken on Apr. 26.11 UT revealed that it is of type IIn SN, about a week after explosion. The name "SN 2003dv" has been assigned to this object. The spectrum has a blue continuum with narrow Balmar lines (about 350 km/s) and very-broad shoulder of them (FZHM ~ 10000 km/s). Overall feature resembles that of bright SN IIn 1998S. The discovery magnitude of SN 2003dv is near to that of typical gravitational-collapsed event (M ~ -17). SN2003dw 20030405.32 <180:C DRi SN2003dw 20030522.24 <180:C DRi SN2003dw 20030426.17 167:C DRi SN2003dw 20030428.10 167:C DRi # SN 2003dw (16:45:51.10, +59:37:38.0 (J2000.0), offset = 11"W, 19"N) # is hosted by MCG +10-24-51 = UGC 10548, a barred-spiral (SBb) # galaxy. The discovery magnitude is close to the expected maximum # for typical SN Ia. Sincerely Yours, Hitoshi Yamaoka, Kyushu Univ., Japan yamaoka@rc.kyushu-u.ac.jp
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