[vsnet-alert 3863] SNe 1999go, 1999gp and 1999gq

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

For three SNe;
cf. [vsnet-alert 3851] (fwd) 3 KAIT new SNe
http://vsnet.kusastro.kyoto-u.ac.jp/vsnet/Mail/vsnet-alert/msg03851.html
cf. [vsnet-alert 3854] Supernova designations from IAUC 7337
http://vsnet.kusastro.kyoto-u.ac.jp/vsnet/Mail/vsnet-alert/msg03854.html
cf. [vsnet-obs 25552] recent SNe early photometry (from IAUC)
http://vsnet.kusastro.kyoto-u.ac.jp/vsnet/Mail/obs25000/msg00552.html

SN 1999go;
cf. [vsnet-chat 2481] Host galaxy of SN1999XXX (NGC 1376)
http://vsnet.kusastro.kyoto-u.ac.jp/vsnet/Mail/vsnet-chat/msg02481.html
cf. [vsnet-chart 244] Chart of SN in NGC1376
http://vsnet.kusastro.kyoto-u.ac.jp/vsnet/Mail/vsnet-chart/msg00244.html
cf. [vsnet-obs 25551] SN1999go (Howerton)
http://vsnet.kusastro.kyoto-u.ac.jp/vsnet/Mail/obs25000/msg00551.html

SN 1999gp;
cf. [vsnet-chat 2482] Host galaxy of SN1999XXX (UGC 1993)
http://vsnet.kusastro.kyoto-u.ac.jp/vsnet/Mail/vsnet-chat/msg02482.html
cf. [vsnet-chart 245] Chart of SN in UGC1993
http://vsnet.kusastro.kyoto-u.ac.jp/vsnet/Mail/vsnet-chart/msg00245.html

SN 1999gq;
cf. [vsnet-chat 2483] Host galaxy of SN1999XXX (NGC 4523)
http://vsnet.kusastro.kyoto-u.ac.jp/vsnet/Mail/vsnet-chat/msg02483.html
cf. [vsnet-chart 246] Chart of SN in NGC4523
http://vsnet.kusastro.kyoto-u.ac.jp/vsnet/Mail/vsnet-chart/msg00246.html
cf. [vsnet-alert 3852] Re: SN1999XXX in NGC 4523
http://vsnet.kusastro.kyoto-u.ac.jp/vsnet/Mail/vsnet-alert/msg03852.html
cf. [vsnet-alert 3853] Re: SN1999XXX in NGC 4523
http://vsnet.kusastro.kyoto-u.ac.jp/vsnet/Mail/vsnet-alert/msg03853.html
cf. [vsnet-chat 2484] (fwd) Re: [vsnet-alert 3852] Re: SN1999XXX in NGC 4523
http://vsnet.kusastro.kyoto-u.ac.jp/vsnet/Mail/vsnet-chat/msg02484.html
cf. [vsnet-alert 3862] Spectroscopy of SN 1999gq
http://vsnet.kusastro.kyoto-u.ac.jp/vsnet/Mail/vsnet-alert/msg03862.html

Dear SN watchers,

  The LOSS KAIT team has discovered three supernovae, which is
reported one IAU circular (#7337).  One of them is in the Virgo
cluster, which is turned out to be of type II.  The host galaxies 
of these three are spiral galaxies, which are expected to be 
producing many massive stars.

  SN 1999go was found on Dec. 23.2 UT at 15.5 mag.  The position is: 
R.A. = 3h37m05s.72, Decl. = -5o02'19".0 (2000.0), which is about 3" 
west and 15" north of the core of the face-on Scd galaxy NGC 1376.  
SN lies slightly north of the brightest inner arm.  Some dim (mag 
about 18 or so) blobs or foreground stars are there in the disk 
region.  The recession velocity of the host is about 4000 km/s.  
The reported magnitude is quite near to the expected maximum of 
typical SNeIa, so this SN is possibly the bright one.

  SN 1999gp was discovered also on Dec. 23.2 UT, and the confirm 
observation on the next day suggests that it is rising (mag 18.0 
-> 17.2).  The location is R.A. = 2h31m39s.15, Decl. = +39o22'52".3
(2000.0), which is 11" west and 10" north of the nucleus of the 
tilted Sb galaxy UGC 1993.  The SN lies slightly south of the disk. 
Note that there is foreground star (mag about 15) about 6" north
from the nucleus.  This galaxy produced SN 1973P, which was 18.0 
mag at discovery.

  SN 1999gq is the nearest among three.  The host galaxy (type Sm 
or disturbed Sc) is firm member of the Virgo cluster.  The SN is 
located at R.A. = 12h33m48s.32, Decl. = +15o10'48".2 (2000.0), which 
is about 5" east and 46" north of the diffuse nucleus of NGC 4523.  
There are 4 stars surrounding the nucleus.  The offsets from SN are:

GSC 1446-1100 (GSCmag = 12.25) 10"E,17"S
GSC 1446-1365 (GSCmag = 14.28) 18"W,79"S
GSC 1446-1100 (GSCmag = 14.52) 38"W,75"S
unnamed       (mag about 16)    7"E,42"S

  The Bisei spectrum obtaind on Dec. 26.84 reveals that it is of 
type II in somewhat early phase.  The followup observation is urged. 

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

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