辐射压支持的星暴星系&活动星系核的燃料补充
Radiation Pressure Supported Starburst Galaxies & The Fueling of Active Galactic Nuclei
摘要：
来自尘埃颗粒对星光的吸收和散射的辐射压力可能是星暴星系和伴随活动星系核燃料供给的自引力秒差距尺度盘的关键反馈机制。我审查的情况下，在光学薄和高度光学厚的上下文中的辐射压力。我描述了爱丁顿极限恒星形成产生~10^{13} L_sun/kpc ^2特征通量的条件，并讨论了辐射压支持的盘的通量低于或高于这个值的物理环境。特别是，我描述了年轻的恒星盘在银河系中心的~0.1 pc尺度。我认为，它在形成时的热辐射通量约为10^{15} L_sun/kpc ^2，以及观测到的恒星质量和尺度高度意味着该盘在形成过程中可能受到辐射压力的支撑。
英文摘要：
Radiation pressure from the absorption and scattering of starlight by dust grains may be a crucial feedback mechanism in starburst galaxies and the self-gravitating parsec-scale disks that accompany the fueling of active galactic nuclei. I review the case for radiation pressure in both optically-thin and highly optically-thick contexts. I describe the conditions for which Eddington-limited star formation yields a characteristic flux of ~10^{13} L_sun/kpc^2, and I discuss the physical circumstances for which the flux from radiation pressure supported disks is below or above this value. In particular, I describe the young stellar disk on ~0.1 pc scales at the Galactic Center. I argue that its bolometric flux at formation, ~10^{15} L_sun/kpc^2, and the observed stellar mass and scale height imply that the disk may have been radiation pressure supported during formation.
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