论文标题

在晚期,低质量狼射线中自动取代状态的线识别和激发

Line Identification and Excitation of Autoionizing States in a Late-Type, Low Mass Wolf-Rayet Star

论文作者

Williams, Robert, Manea, Catherine, Margon, Bruce, Morrell, Nidia

论文摘要

在低质量,晚型LMC [WC11] Star J060819.93-715737.4中,很大一部分先前未识别的线的识别已使用电子数据库。有大量来自自动化(AI)水平的C II发射线非常大。 C I I基态和激发AI水平之间的共振荧光被证明是一个重要的光吸附过程,在恒星风中令人兴奋的AI发射线中,与介电重组具有竞争力,并且在许多类型的发射线恒星中具有广泛的应用。此外,在发射中出现了许多C II四重奏的多重组,这些多重速度并非直接通过重组或共振荧光而激发,这表示发射区域中的大风密度,从而增强了DoubleT和四重奏状态之间的碰撞转移。

Identifications of a large fraction of previously unidentified lines in the complex spectrum of the low mass, late-type LMC [WC11] star J060819.93-715737.4 have been made utilizing electronic databases. There are an exceptionally large number of C II emission lines originating from autoionizing (ai) levels. Resonance fluorescence between the C II ground state and excited ai levels is shown to be a important photoabsorption process that is competitive with dielectronic recombination in exciting ai emission lines in stellar winds, and has broad application to many types of emission-line stars. In addition, numerous C II quartet multiplets appear in emission that are not excited directly by recombination or resonance fluorescence, signifying high wind densities in the emission region that enhance collisional transfer between doublet and quartet states.

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