首页> 外文会议>Symposium of the International Astronomical Union;International Astronomical Union., Symposium >Episodic accretion in focus: revealing the environment of FU Orionis-type stars
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Episodic accretion in focus: revealing the environment of FU Orionis-type stars

机译:焦点中的情节增齿:揭示富蚊型恒星的环境

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The earliest phases of star formation are characterised by intense mass accretion from the circumstellar disk to the central star. One group of young stellar objects, the FU Orionis-type stars exhibit accretion rate peaks accompanied by bright eruptions. The occurance of these outbursts might solve the luminosity problem of protostars, play a key role in accumulating the final star mass, and have a significant effect on the parameters of the envelope and the disk. In the framework of the Structured Accretion Disks ERC project, we are conducting a systematic investigation of these sources with millimeter interferometry to examine whether they represent normal young stars in exceptional times or they are unusual objects. Our results show that FU Orionis-type stars can be similar to both Class I and Class II systems and may be in a special evolutionary phase between the two classes with their infall-driven episodic eruptions being the main driving force of the transition.
机译:恒星形成的最早相位的特征在于从外星磁盘到中央恒星强烈的质量增加。 一组年轻的恒星物体,富蚊型恒星表现出伴有明亮爆发的增生率峰值。 这些爆发的发生可能解决了抗议性的亮度问题,在积累最终星团质量方面发挥关键作用,对信封和盘的参数产生显着影响。 在结构化磁盘ERC项目的框架中,我们正在对这些来源进行系统调查,其中包含毫米干涉测量学,以检查它们是否以特殊的时间代表正常的年轻颗星,或者它们是不寻常的物体。 我们的研究结果表明,富蚊型恒星可以类似于I类和II类系统,并且可以在两个类之间具有特殊的进化相位,其缺口驱动的影片爆发是过渡的主要驱动力。

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