V4743 Sgr: Nova Sgr 2002 No.3
K. Haseda detected a possible bright object (mag about 5.0) in Sgr on an
image taken on Setember 20 (vsnet-campaign-nova
1013). The object was promptly confirmed at 5-6mag (vsnet-campaign-news
174, vsnet-campaign-nova
1014, 1015).
Prediscovery observations show that it was faint at least before September
8 (vsnet-campaign-nova
1017, 1046,
1048,
1050),
and already bright on Sep. 18.465 (5.5p mag), 19.424 (5.5mag) and 19.427
(4.9p mag) (vsnet-campaign-nova
1023, 1024,
1028,
1047).
At the position of the object, there is a known star (rmag=16.7 in USNO_A2.0)
in some catalogues (vsnet-campaign-nova
1018, 1019,
1036).
T. Kato commented that the colors of the suggested quiescent candidate
are consistent with those of a little reddened quiescent nova (vsnet-campaign-nova
1020). Spectroscopic confirmation, which revealed the nova nature
of this object, was independently done by M. Fujii, D. West, and M. Gavin
on September 21. The object showed strong Balmer and Fe II emission lines.
These observation confirmed that the object is an Fe II-class nova shortly
after maximum (vsnet-campaign-nova
1030, 1031,
1032,
1037,
vsnet-campaign-news
175). The nova has been given the official permanent designation, V4743
Sgr, in IAUC 7976 (vsnet-campaign-nova
1065).
The object was rapidly fading in the end of September (vsnet-campaign-nova
1067, 1070,
1071,
1072).
T. Richards performed time-series observations and reported an exactly
linear decrease in brightness of 1.038 mag/day(B) and 0.878 mag/day(V)
on September 22 (vsnet-campaign-nova
1066).
The fading rate became smaller with time (vsnet-campaign-nova
1091, 1093,
1098,
1114).
M. Fujii reported a spectrum of V4743 Sgr taken on Nov. 23, which showed
a strong [O III] emission line. The object has apparently been
entered the nebular phase (vsnet-campaign-nova
1147).
Other articles:
vsnet-campaign-nova
1021, 1022,
1025,
1026,
1033,
1035,
1039,
1041,
1045,
1043,
1049,
1053,
1054,
1057,
1062,
1063,
1064,
1073,
1075,
1074,
1075,
1078,
1080,
1086,
1083,
1089,
1104,
1141
Links:
Prediscovery photograph taken by T. Tanaka:
/vsnet/ftpfile/Novae/nova_sgr02-3/tanaka.jpg
[vsnet-campaign-nova
1023]
Chart presented by R. Bouma:
http://www.shopplaza.nl/astro/vs-charts/nova2002-3SGR.htm
[vsnet-campaign-nova
1027]
Chart presented by the AAVSO:
http://www.aavso.org/cgi-bin/shrinkwrap.pl?path=/charts/SGR/N_SGR_02_3/NSGR02_3-B.JPG
[vsnet-campaign-nova
1034]
Image taken by P. Martinez:
/vsnet/ftpfile/Novae/nova_sgr02-3/2002nova02.jpg
[vsnet-campaign-nova
1063]
CCD image taken by D. West:
http://members.aol.com/dwest61506/page26.html
[vsnet-campaign-nova
1029]
Spectrum taken by D. West:
http://members.aol.com/dwest61506/page27.html
[vsnet-campaign-nova
1031]
Spectrum taken by M. Gavin:
http://home.freeuk.com/m.gavin/nov2002.htm
[vsnet-campaign-nova
1037, 1076]
Spectrum taken by M. Fujii:
http://www1.harenet.ne.jp/~aikow/nova_sgr_no3.gif
[vsnet-campaign-nova
1042]
http://www1.harenet.ne.jp/~aikow/v4743sgr_20021123.gif
[vsnet-campaign-nova
1147]
Spectrum taken by C. Buil:
http://astrosurf.com/buil/us/nsgr3/nsgr3.htm
[vsnet-campaign-nova
1059, 1085,
1092,
1094]
WWW page of this nova made by M. Richmond:
http://spiff.rit.edu/classes/phys230/lectures/nova/nova.html
[vsnet-campaign-nova
1038]
VSNET special page for this object:
http://vsnet.kusastro.kyoto-u.ac.jp/vsnet/Novae/nsgr02-3.html