[vsnet-alert 3359] SN 1999dk in UGC 1087 and others

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

Dear SN watchers,

  IAUC 7237 noticed the discovery of three (apparent) supernovae.
For the first, SN 1999dk was found by the LOSS KAIT team on Aug. 
12.5 UT and confirmed on Aug. 13.5 UT.  The magnitudes was reported 
as 16.7 and 16.5 (unfiltered CCD), respectively, which indicate 
that this SN would be in rising phase.  The location is: R.A. = 
01h31m26s.92, Decl. = +14o17'05".7 (2000.0), which is about 4" east 
and 26" north from the nucleus of UGC 1087.  

  UGC 1087 is classified as Sc (face on) galaxy in RC3, besides 
it is classified as "diffused" in PGC.  There seems no confusing 
foreground star in DSS images.  

  The recession velocity of this host galaxy is around 4000 km/s, 
from which the estimated maximum of typical SN Ia is 15 mag or 
little dimmer.  Followup observation is surely urged.

  Second, SN 1999dl was discovered by Ametican amateur T. Puckett 
and M. Marcus, shortly after their discoveries of SNe 1999di and 
1999dj. The host galaxy is anonymous one, and the coordinates of 
SN is: R.A. = 23h04m11s.70, Decl. = +27o07'07".3 (2000.0), which 
is 3" east and 9" south of the nucleus.  Also, there is no 
confusing field star.

  The recession velocity of this galaxy is unknown, but about 5' 
east from this galaxy, there is very nearby spiral galaxy 
UGC 12340, which seems to be on the distance comparable to the 
Virgo cluster.  The attention to this SN should be needed.

  Third, SN 1999dm was discovered in further cluster by Seoul 
National University team.  If my recognization is correct, it 
is the first supernovae found by Korean Instruments.  
Congratulations to the team!

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

VSNET Home Page

Return to Daisaku Nogami

---

vsnet-adm@kusastro.kyoto-u.ac.jp