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SN2003aq 20020530.0 <195C Bol SN2003aq 20030206.070 185C Bol SN2003aq 20030214.119 180C Bol # SN 2003aq (14:10:07.24, +17:37:05.3 (J2000.0), offset = 4"E, 8"N) is # hosted by NGC 5490C = Arp 79, a face-on barred spiral (SB(rs)bc) # galaxy. The SN is superimposed on the northeastern arm. NGC 5490C # belongs to a group (or cluster) of galaxies led by NGC 5490 # (elliptical), which had produced peculiarly less luminous SN Ia # 1997cn (discovered at mag about 158C, but due to its intrinsic # redness, its maximum was thought to be V about 16.8). The expected # maximum for typical SN Ia in this group is mag about 16.1, then SN # 2003aq seems to be a gravitational-collapse event. SN2003ar 20030123.0 <195C Bol SN2003ar 20030206.162 179C Bol SN2003ar 20030214.142 168C Bol # SN 2003ar (16:02:08.11, +70:24:55.5 (J2000.0), offset = 5"E, 6"S) is # hosted by MCG +12-15-47, which is probably identified with poorly # coordinated NGC 6071, an early-type (E or S0) galaxy. The expected # maximum for typical SN Ia is mag about 16.7. SN2003as 20030126.0 <190C Bol SN2003as 20030213.909 168C Bol SN2003as 20030124.765 168C Bol # SN 2003as (5:28:45.81, +49:52:59.1 (J2000.0), offset = 10"E, 2"S) is # hosted by MCG +08-10-7, a spiral galaxy near the Galactic plane (b = # 8o.4). The expected maximum for typical SN Ia is mag about 17.6 in # R (the Galactic extinction is introduced according to Schlegel et al. # (1998)), but unfiltered CCD observation would make a brighter # magnitude because of the infrared leak. # SN 2003L was detected also in X-ray. Sincerely Yours, Hitoshi Yamaoka, Kyushu Univ., Japan yamaoka@rc.kyushu-u.ac.jp
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