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在三星云中诱导了巨大的恒星形成?
Cernicharo1, Lefloch, Cox
1J. Cernicharo, Instituto de Estructura de la Materia, Dpto. Fisica Molecular, Consejo Superior de Investigaciones Cientificas, (CSIC), Serrano 123, 28006 Madrid, Spain. B. Lefloch, Instituto de Estructura de la Materia, Dpto. Fisica Molecu.
概括
在年轻的Trifid星云中检测到的大质量原恒星来源表明诱导了恒星形成. 这些早期的恒星,从不活跃的核心到有喷射的恒星,代表了星云.
科学领域:
- 天文学和天体物理学
- 星星形成的形成
- 银河系中的星云
背景情况:
- 三星云,一个年轻的银河系HII区域,是恒星进化的活跃地点.
- 以前的红外观测已经暗示了星云中存在前恒星物体的存在.
研究的目的:
- 为了研究三星星云中的原星源的性质和进化阶段.
- 探索这种动态环境中诱导恒星形成的潜力.
主要方法:
- 利用红外太空天文台的数据来检测和描述前恒星源.
- 分析了这些来源与分子气体凝结的关联.
- 检查了进化状态,包括质量喷射和光学喷射活动.
主要成果:
- 在不同的进化阶段确定了几个巨大的原恒星源 (17-60太阳质量).
- 发现这些来源位于星云的边缘和内部,与密集的气体有关.
- 观察到从不活跃的核心到表现出暴力质量喷射和光学喷射的源的范围.
结论:
- 检测到的原恒星源代表了三星云中最近一代的恒星.
- 有证据表明,这些恒星是通过星云中的诱导恒星形成过程形成的.
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