论文标题
在光学中解决R136的核心
Resolving the core of R136 in the optical
论文作者
论文摘要
提出了大麦芽云中R136簇的最清晰的光学图像，这是首次解决中心核心的成员，包括R136A1，这是最庞大的恒星。这些数据是在中型波段过滤器中使用双子座斑点成像仪Zorro获取的，其有效波长类似于BVRI在30-40 MAS之间实现角度分辨率。以前在文献中闻名的所有明星，在中央$ 2''\ times2'$中具有$ v <$ 16的磁场。在WN5H恒星R136 A1和A3中检测到视觉伴侣（$ \ geq $ 40 MAS； 2000 AU）。 A1的视觉伴侣的光度法表明它是O频谱类型的。基于使用已解决的Zorro成像的新的光度照明性，据估计，单个WN5H星的质量在150-200 $ M _ {\ odot} $之间，显着降低了某些最大恒星的当今质量。这些质量估计是建立出色的上质量功能的关键锚点。
The sharpest optical images of the R136 cluster in the Large Magellanic Cloud are presented, allowing for the first time to resolve members of the central core, including R136a1, the most massive star known. These data were taken using the Gemini speckle imager Zorro in medium-band filters with effective wavelengths similar to BVRI achieving angular resolutions between 30-40 mas. All stars previously known in the literature, having $V<$16 mag within the central $2''\times2''$ were recovered. Visual companions ($\geq$40 mas; 2000 au) were detected for the WN5h stars R136 a1, and a3. Photometry of the visual companion of a1 suggests it is of mid O spectral type. Based on new photometric luminosities using the resolved Zorro imaging, the masses of the individual WN5h stars are estimated to be between 150-200 $M_{\odot}$, lowering significantly the present-day masses of some of the most massive stars known. These mass estimates are critical anchor points for establishing the stellar upper-mass function.
