SN 2005 gj: Evidence for LBV supernovae progenitors?

Details SN 2005 gj: Evidence for LBV supernovae progenitors? SN 2005 gj: Evidence for LBV supernovae progenitors?

2008-04-15

arxiv.org/abs/0804.2392v1

Astronomy and Astrophysics

Astrophysics

Accepted as a letter to A&A, 4 pages,3 figures

Scientific paper

10.1051/0004-6361:200809755

There has been mounting observational evidence in favour of Luminous Blue Variables (LBVs) being the direct progenitors of supernovae. Here we present possibly the most convincing evidence yet for such progenitors. We find multiple absorption component P-Cygni profiles of hydrogen and helium in the spectrum of SN 2005gj, which we interpret as being an imprint of the progenitors mass-loss history. Such profiles have previously only been detected in Luminous Blue Variables. This striking resemblance of the profiles, along with wind velocities and periods consistent with LBV's leads us to connect SN 2005gj to an LBV progenitor.

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