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Dear SN watchers, IAUC 8098 informed the classifications of several recent SNe by the Australian (ANU) group. SN 2003bn: In [vsnet-campaign-sn 574] (Mar. 07!): >SN2003bn 20030221.0 <210C NEM >SN2003bn 20030222.33 202C NEM >SN2003bn 20030227.48 167C NEM >SN2003bn 20030228.38 167C NEM >SN2003bn 20030306.13 167:V LCO > ># SN 2003bn (10:02:35.51, -21:10:54.5 (J2000.0), offset = 3"E, 1"S) is ># hosted by 2MASXi J1002353-211052, a dim edge-on (?) galaxy. It is type II SN, about 1 month after explosion based on Mar 24.48 spectrum. The recession velocity of the host galaxy was measured as 3800 km/s, from which the derived absolute magnitude is normal for SN II. SN 2003bu: In [vsnet-campaign-sn 581] (Mar. 13!): >SN2003bu 20030210.5 <180:C KAI >SN2003bu 20030311.5 175:C KAI >SN2003bu 20030312.5 172:C KAI > ># SN 2003bu (14:00:31.45, -28:52:32.7 (J2000.0), offset = 8"W, 4"S) is ># hosted by NGC 5393, a face-on barred spiral galaxy with ring ># structure ((R_1R'_2)SB(r)b:). The SN is superimposed on the west ># end of the bar. The expected maximum for typical SN Ia is mag about ># 16.3. It is type Ic SN, about 1 week past maximum on Mar 24.68. SN 2003cb: In [vsnet-campaign-sn 584] (Mar. 16): >SN2003cb 20030207.5 <193:C SCH >SN2003cb 20030313.4 179C SCH >SN2003cb 20030315.4 179C SCH > ># SN 2003cb (13:00:33.25, -6:51:09.3 (J2000.0), offset = 10"W, 2"N) is ># hosted by NGC 4885, apparently disk type (Sa?) galaxy. The expected ># maximum for typical SN Ia is mag about 15.0, though it seems not to ># of this case. The spectrum taken on Mar 24.64 revealed that it is type II SN about 2 months after explosion. SN 2003ch: In [vsnet-campaign-sn 585] (Mar. 23): >SN2003ch 20030310.2 <190:C KAI >SN2003ch 20030321.2 174:C KAI >SN2003ch 20030322.2 170:C KAI > ># SN 2003ch (7:17:57.92, +9:41:34.9 (J2000.0), offset = 5"E, 13"N) is ># hosted by UGC 3787, an elliptical (or lenticular) galaxy which is a ># western component of the galaxy pair. There are a lot of foreground ># stars, so the identification should be done carefully. It is type Ia SN, about 3 days before maximum on Mar. 24.45. The expected maximum for typical SN Ia is mag about 16.9, which is consistent with the reported magnitudes. SN 2003ci: In [vsnet-campaign-sn 585] (Mar. 23): >SN2003ci 20030305.4 <190:C KAI >SN2003ci 20030321.4 175:C KAI >SN2003ci 20030322.4 175:C KAI > ># SN 2003ci (11:10:23.83, +4:49:35.9 (J2000.0), offset = 11"W, 12"S) ># is hosted by UGC 6212, a disturbed spiral galaxy interacting with ># the southern smaller one. The new object is superimposed on the ># southern arm. There is a foreground star also superimposed on the ># disk, so the careful identification would be needed. The expected ># maximum for typicaol SN Ia is comparable with the discovery ># magnitude. It is SN II, about 3 weeks after explosion. It seems brighter than normal one. Sincerely Yours, Hitoshi Yamaoka, Kyushu Univ., Japan yamaoka@rc.kyushu-u.ac.jp
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