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[vsnet-campaign-sn 210] SN 2001cz in NGC 4679
Dear SN watchers,
R. Chassagne has discovered his 9th SN 2001cz at mag 14.7. The host
galaxy NGC 4679 is a member of the famous Centaurus Cluster, and
probably near maximum. Congratulations, Robin!
IAUC 7657 informed that the discovery was made on July 4.64. The
position of the new object is: R.A. = 12h47m30s.17, Decl. =
-39o34'48".1 (2000.0), which is about 1" west and 32" south of the
nucleus of the tilted spiral (SA(s)bc) galaxy NGC 4679. It is on the
southern bright arm.
Because of somewhat low galactic latitude (b = 23o.3), there are
plenty of foreground stars. Especially, a mag 15: star is
superimposed on the southern edge of the bulge region, which is about
10" due south of the nucleus of NGC 4679. Don't confuse it as a SN.
NGC 4679 is one of the brighest member of the Centaurus Cluster =
ACO 3526. This cluster has a large velocity dispersion, which is
probably due to the ongoing dynamical phenomena such as cluster
merging. The recession velocity of the cluster as a total is about
3400 km/s, which indicate that the expected maximum of typical SN Ia
is around mag 15.0. The previous SNe reported in this cluster ( < 5
degree from the center) are: SN 1990I in NGC 4650A (mv = 15.6, type Ia
some weeks after maximum, IAUC 5003); SN 1983A in MCG -06-28-022 (mpg
= 17.5, type unknown, IAUC 3764); and SN 1984I in MCG -07-27-049 (mv =
15.5, type I, IAUC 3944, 3946).
Sincerely Yours,
Hitoshi Yamaoka, Kyushu Univ., Japan
yamaoka@rc.kyushu-u.ac.jp
vsnet-adm@kusastro.kyoto-u.ac.jp
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