Sn 2004Dj
SN 2004dj
was the brightest
supernova
since
SN 1987A
at the time of its discovery. This Type II-P supernova was discovered by
Koichi Itagaki
, a
Japanese
astronomer
on
July 31
,
2004
. At the time of its discovery, its apparent brightness was 11.2
visual magnitude
; the discovery occurred after the supernova had reached its
peak magnitude
. The supernova's progenitor is a star in a young, compact
star cluster
in the
galaxy
NGC 2403
. The cluster had been cataloged as the 96
th
object in a list of luminous
stars
and clusters by
Allan Sandage
in 1984; the progenitor is therefore commonly referred to as Sandage 96. This cluster is easily visible in a
Kitt Peak National Observatory
image and appears starlike.
External links
supernovae.net image collection
Cropped and rotated HST photograph
Bright Supernova page on 2004dj
The Progenitor of the Type II-P SN 2004dj in NGC 2403
(Abstract and Paper)
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