一个不对齐的原星盘被气流养,在一个有条纹的螺旋形巨型密集核心中
Xiaofeng Mai1,2,3, Tie Liu1,4, Xunchuan Liu1,5
1Shanghai Astronomical Observatory, Chinese Academy of Sciences, Shanghai 200030, PR China.
Science advances
|September 17, 2025
概括
大型密集核心 (MDCs) 通过星系状结构形成高质量年轻恒星物体 (HMYSOs). 这些有组织的,分层的结构是气体积累和巨型磁盘中角动量积累的关键.
科学领域:
- 天体物理学 天体物理学
- 星星形成 星星形成
- 计算天体物理学 计算天体物理学
背景情况:
- 高质量恒星通过反和金属丰富显著影响宇宙进化.
- 在形成高质量年轻恒星天体 (HMYSOs) 的大质量密集核 (MDCs) 内的组装和质量转移过程仍然不太了解.
研究的目的:
- 在高质量年轻恒星物体 (HMYSO) 形成过程中调查大质量密集核心 (MDC) 的结构和动态.
- 了解这些环境中的各种尺度如何积累质量和积累角动量.
主要方法:
- 利用了大质量年轻恒星物体 (HMYSO) 的大质量密集核心 (MDC) 的多尺度观测 (40到2500天文单位).
- 分析了观测数据,以识别和描述MDC中的连贯动态结构.
主要成果:
- 在MDC中确定了一个类似银河系的结构,它具有螺旋臂,为中央条提供料,该条将气体导入伪盘.
- 通过包括凯普勒盘和内盘在内的内部结构观察到等级积累,可能导致双极外流.
- 同时观察到螺旋臂,条,流,包裹,盘,和外流作为一个单一,连贯的结构.
结论:
- 高质量年轻恒星物体 (HMYSOs) 的形成涉及有组织良好的,等级结构类似于被禁止的螺旋星系.
- 这些结构对于高效的气体积累和巨型磁盘形成时的角动量积累至关重要.
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