Famous supernova reveals clues about crucial cosmic distance markers
This supernova, discovered in 1604 by Johannes Kepler, belongs to an important class of objects that are used to measure the rate of expansion of the Universe.
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“Geologist [I'm Climate Change]”
Since: Mar 07
#1 Mar 20, 2013
That one is a really impressive article.
The accretion disc having been found, means that the companion star should also now be found.
The aspherical (non circular and spiral structure imprint) nature of the remnant indicates that the accretion disc was the feature shaping the remnant. The fact that it is a large accretion disc implies that the progenitor was an M giant & white dwarf symbiotic star similar to Mira or AG pegasi.
The companion star will be a VERY interesting find. It may have lost its outermost layers so is now likely to resemble a classical K giant.
If it remains an M giant it may well be visible as an IR object.
Have a nice day: Ag
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