We identify IRAS 16115−5044, which was previously classified as a protoplanetary nebula (PPN), as a candidate luminous blue variable (LBV). The star has high luminosity (≳10 5.75 L ⊙ ), ensuring supergiant status, has a temperature similar to LBVs, is photometrically and spectroscopically variable, and is surrounded by warm dust. Its near-infrared spectrum shows the presence of several lines of H i , He i , Fe ii , Fe [ ii ], Mg ii , and Na i with shapes ranging from pure absorption and P Cygni profiles to full emission. These characteristics are often observed together in the relatively rare LBV class of stars, of which only ≈20 are known in the Galaxy. The key to the new classification is the fact that we compute a new distance and extinction that yield a luminosity significantly in excess of those for post-A...

中文翻译：

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一个新的候选发光蓝色变量

我们将IRAS 16115-5044（以前被归类为原行星云（PPN））识别为候选发光蓝色变量（LBV）。这颗恒星具有很高的发光度（≳10 5.75 L⊙），可确保处于超巨型状态，其温度类似于LBV，具有光度和光谱可变性，并被温暖的尘埃包围。它的近红外光谱显示了H i，He i，Fe ii，Fe [ii]，Mg ii和Na i的几条线的存在，其形状范围从纯吸收和P Cygni型到完全发射。这些特征通常是在相对罕见的LBV类恒星中一起观察到的，在银河系中只有≈20个。新分类的关键在于，我们计算出一个新的距离和消光，产生的光度大大超过A后的光度。