Thursday,
18 December 2008
at 11:00
Iurii Sushch
Astronomical Observatory of Kiev University, Ukraine
Modelling of the Vela Complex
Including the Vela Supernova Remnant, the Binary System γ2 Velorum and the Gum Nebula
Abstract.
We study the geometry of the Vela complex including the Vela supernova remnant
(SNR), the binary system γ2 Velorum and the Gum Nebula. We argue
that the asymmetry between the North-East and South-West parts of the Vela SNR
could be explained by the presence of a stellar wind bubble blown by the
Wolf-Rayet (WR) star nearest to the Earth in the γ2 Velorum
system. Detection of the boundary of the stellar wind bubble of
γ2 Velorum enables us to derive an upper limit of 45 solar
masses on the initial mass of the Wolf-Rayer star. The low initial mass of the
WR star implies that the luminosity of nuclear line of 26Al, produced
by the γ2 Velorum is below the detection limit of current
telescopes.
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