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arXiv 1504.03565astro-ph.GAastro-ph.SR
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恒星和星团的形成:ALMA-SKA协同作用

Star and Stellar Cluster Formation: ALMA-SKA Synergies

G. A. Fuller, J. Forbrich, J. M. Rathborne, S. Longmore, S. Molinari

摘要:

在接下来的十年里,ALMA和SKA进行的观测将揭示年轻恒星的质量组装和吸积过程,这将是恒星形成研究的革命性成果。在这里,我们总结了ALMA的能力,并讨论了其早期科学观测的最新结果。然后,我们回顾年轻的低质量和高质量恒星的红外和无线电变化观测。然后概述了恒星形成区的时域SKA射电连续谱巡天。这项调查将产生数百个年轻源的射电光变曲线,首次提供了对整个恒星质量范围内射电变率的系统调查。这些光变曲线将探测年轻双星系统的磁层相互作用、外流的起源、中央源上的情节式吸积以及潜在地限制嵌入源的旋转速率。

英文摘要:

Over the next decade, observations conducted with ALMA and the SKA will reveal the process of mass assembly and accretion onto young stars and will be revolutionary for studies of star formation. Here we summarise the capabilities of ALMA and discuss recent results from its early science observations. We then review infrared and radio variability observations of both young low-mass and high-mass stars. A time domain SKA radio continuum survey of star forming regions is then outlined. This survey will produce radio light-curves for hundreds of young sources, providing for the first time a systematic survey of radio variability across the full range of stellar masses. These light-curves will probe the magnetospheric interactions of young binary systems, the origins of outflows, trace episodic accretion on the central sources and potentially constrain the rotation rates of embedded sources.

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