SN 2005 gj: evidence for LBV supernovae progenitors?
SN 2005 gj: evidence for LBV supernovae progenitors?
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DOI：
10.1051/0004-6361:200809755
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发表时间：
2008-04
影响因子：
6.5
通讯作者：
C. Trundle;R. Kotak;J. Vink;W. E. K. Q. U. Belfast;Armagh Observatory;I. -. London
中科院分区：
文献类型：
--
作者：
C. Trundle;R. Kotak;J. Vink;W. E. K. Q. U. Belfast;Armagh Observatory;I. -. London
越来越多的观测证据支持发光蓝色变星（LBV）是超新星的直接前身。在这里，我们为此类祖先提供了可能是迄今为止最令人信服的证据。我们在 SN 2005gj 的光谱中发现了氢和氦的多个吸收成分 P-Cygni 分布，我们将其解释为祖星质量损失历史的印记。以前仅在夜光蓝色变量中检测到此类轮廓。这种轮廓的惊人相似性，以及与 LBV 一致的风速和周期，使我们将 SN 2005gj 与 LBV 的祖先联系起来。
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.