Resolving the Core of R136 in the Optical
Resolving the Core of R136 in the Optical
复制标题
解析R136在光学领域的核心
DOI：
10.3847/1538-4357/ac8424
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发表时间：
2022
期刊：
影响因子：
--
通讯作者：
M. Rubio
中科院分区：
文献类型：
--
作者：
V. Kalari;E. Horch;R. Salinas;J. Vink;M. Andersen;J. Bestenlehner;M. Rubio
大麦哲伦星云中R136星团的最清晰的光学图像，使我们能够第一次解决中央核心的成员，包括已知质量最大的星星R136 a1。这些数据是使用Gemini散斑成像仪Zorro在具有类似于BVRI的有效波长的中频滤波器中获得的，其实现了30-40 mas之间的角分辨率。文献中先前已知的所有恒星（中心2英寸× 2英寸内V < 16等）都被发现。在WN 5 h恒星R136 a1和a3中探测到了目视伴星（质量质量≥40 mas; 2000 Au）。对a1伴星的光度测定表明它属于中O光谱类型。根据新的光度光度计，使用解析的佐罗成像，个别WN 5 h恒星的质量估计在150到200 M <$m之间，大大降低了一些已知的最大质量恒星的质量。这些质量估计是建立恒星上质量函数的关键锚点。
The sharpest optical images of the R136 cluster in the Large Magellanic Cloud are presented, allowing us 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″ × 2″, were recovered. Visual companions (≥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 and 200 M ⊙, 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.
影响因子：
56.9
作者：
F. Schneider;H. Sana;C. Evans;J. Bestenlehner;J. Bestenlehner;N. Castro;L. Fossati;G. Gräfener;N. Langer;O. Ramírez-Agudelo;C. Sabín-Sanjulián;S. Simón-Díaz;S. Simón-Díaz;F. Tramper;P. Crowther;A. D. Koter;A. D. Koter;S. D. Mink;P. Dufton;María García;M. Gieles;V. Hénault-Brunet;V. Hénault-Brunet;A. Herrero;A. Herrero;R. Izzard;V. Kalari;D. Lennon;J. M. Apellániz;N. Markova;F. Najarro;P. Podsiadlowski;P. Podsiadlowski;J. Puls;W. Taylor;J. V. Loon;J. Vink;C. Norman;C. Norman
通讯作者：
F. Schneider;H. Sana;C. Evans;J. Bestenlehner;J. Bestenlehner;N. Castro;L. Fossati;G. Gräfener;N. Langer;O. Ramírez-Agudelo;C. Sabín-Sanjulián;S. Simón-Díaz;S. Simón-Díaz;F. Tramper;P. Crowther;A. D. Koter;A. D. Koter;S. D. Mink;P. Dufton;María García;M. Gieles;V. Hénault-Brunet;V. Hénault-Brunet;A. Herrero;A. Herrero;R. Izzard;V. Kalari;D. Lennon;J. M. Apellániz;N. Markova;F. Najarro;P. Podsiadlowski;P. Podsiadlowski;J. Puls;W. Taylor;J. V. Loon;J. Vink;C. Norman;C. Norman
论恒星初始质量函数上端的真实形状：以R136为例
DOI：
10.1051/0004-6361/201218972
发表时间：
2012
期刊：
arXiv: Astrophysics of Galaxies
影响因子：
--
作者：
Banerjee;Kroupa
通讯作者：
Kroupa