The case against a massive black hole at the Galactic Centre
The case against a massive black hole at the Galactic Centre
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DOI：
10.1038/359131a0
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发表时间：
1992-09
期刊：
影响因子：
64.8
通讯作者：
R. Sanders
中科院分区：
文献类型：
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作者：
R. Sanders
在我们银河系中央秒差距观测到的许多致密近红外源已被证明是非常大质量的明亮蓝色恒星，具有强氦线和快风，可能类似于沃尔夫-拉叶星1 -3;而复杂的近红外源IRS 16，似乎是这些源的中心集中点，现在已经被证明由大约20颗发光的蓝色恒星组成，而不是100颗主序星，正如早些时候所建议的那样。这些年轻的蓝色恒星，而不是与附近致密射电源SgrA*（参考文献8）有关的任何天体，可能是银河系内部两个秒差距内电离辐射1和流体动力活动5 - 7的主要来源。早期的一个论点4认为IRS 16组成部分的分布排除了在SgrA* 或附近存在百万太阳质量黑洞的可能性，即使IRS 16中的恒星少于24颗，这个论点仍然有效。在这里，我进一步论证，在这个区域中年轻恒星的存在与巨大黑洞或任何其他中心凝聚质量的存在是不相容的，因为潮汐力会抑制星星的形成。
MANY of the compact near-infrared sources observed in the central parsec of our Galaxy have been shown to be very massive, luminous blue stars with strong helium lines and fast winds, perhaps similar to Wolf–Rayet stars1–3; and the complex near-infrared source IRS16, which appears to be the central concentration of such sources, has now been shown3to consist of about 20 luminous blue stars, not 100 main-sequence stars, as had been suggested earlier4. These young blue stars, rather than any object associated with the nearby compact radio source SgrA* (ref. 8), may be the pre-dominant source of ionizing radiation1 and hydrodynamic activity5–7in the inner two parsecs of the Galaxy. An earlier argument4that the distribution of IRS16 components precludes the existence of a million-solar-mass black hole at or near SgrA* remains valid even if there are fewer than two dozen stars in IRS16. Here I argue further that the presence of young stars in this region is incompatible with the presence of a giant black hole or any other centrally condensed mass, because tidal forces would have inhibited star formation.