Journal
ASTRONOMY & ASTROPHYSICS
Volume 483, Issue 3, Pages L47-L50Publisher
EDP SCIENCES S A
DOI: 10.1051/0004-6361:200809755
Keywords
stars : supernovae : general; stars : supernovae : individual : SN 2005gj; stars : supernovae : individual : SN 2002ic; stars : circumstellar matter; stars : evolution; stars : winds, outflow
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There is 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 progenitor's 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 those of LBVs leads us to connect SN 2005gj to an LBV progenitor.
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