[vsnet-alert 2871] SN 1999bs in UGC 11093

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

cf. vsnet-chat 1772
http://vsnet.kusastro.kyoto-u.ac.jp/vsnet/Mail/vsnet-chat/msg01772.html
cf. vsnet-chart 145
http://vsnet.kusastro.kyoto-u.ac.jp/vsnet/Mail/vsnet-chart/msg00145.html

Dear SN watchers,

  Another nearby SN informed today is SN 1999bs, which was discovered
by Beijing SN search team.  According to IAUC 7141, it was found on
Apr. 12.8 and confirmed on Apr. 13.9, which was 16.1 mag on both
epoch.  The location of this SN is: R.A. = 18h01m48s.75, Decl. =
+7o00'49".6 (2000), which is about 43" west and 164" north of the center 
of UGC 11093.

  UGC 11093 is an Scd galaxy nearly edge on.  From the offset, this
new object is clearly outside from the visible disk (on DSS images).
If we assume that the distance of UGC 11093 is 30 Mpc (from its
recession velocity = 1961 km/s and assume H_0 = 65 km/s/Mpc), it is
equivalent to 25 kpc from the core of the host.  

  Because the location is near from the Galactic plane (b = 14.2 deg),
there are many foreground stars around the host galaxy and the
position of the reported new star.  On the disk plane of the host,
there is a foreground star with mag about 12.  Also, about 8"
northeast from the position of new star there is another foreground
star U0900_11370619 (USNO_rmag = 15.2).  The identification of the new
object would have to be done carefully.

  The Galactic extinction is estimated as A_B = 0.78 mag for UGC
11093, which means that A_V is about 0.6 mag.  Then typical SNeIa on
the distance of 30 Mpc would be 14 mag at their maximum.  Followup
observations are urged.

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

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