Data Centre for Astrophysics
Astronomy Department of the University of Geneva
ISDC Seminar

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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