Observational Studies of Massive Star Formation

该项目将结合近红外光谱和射电连续成像。光谱学允许研究分子吸收谱线和氢和氦发射谱线，分子吸收谱线给出了离恒星非常近的冷气体的结构，氢和氦发射谱线给出了存在的任何喷流或风的速度结构。这些结果将与现有模型对这一质量的年轻原恒星的预期结果进行比较。射电连续体数据也将用于研究喷流。连续射电数据将量化恒星的质量损失率。射电成像提供的高空间分辨率将用于研究演化，进一步限制目前的发射机制。该项目将结合近红外光谱和射电连续成像。光谱学允许研究分子吸收谱线和氢和氦发射谱线，分子吸收谱线给出了离恒星非常近的冷气体的结构，氢和氦发射谱线给出了存在的任何喷流或风的速度结构。这些结果将与现有模型对这一质量的年轻原恒星的预期结果进行比较。射电连续体数据也将用于研究喷流。连续射电数据将量化恒星的质量损失率。射电成像提供的高空间分辨率将用于研究演化，进一步限制目前的发射机制。

This project will combine near infrared spectroscopy and radio continuum imaging. The spectroscopy allows the study of the molecular absorption lines, which give the structure of the cool gas very near to the star, and hydrogen and helium emission lines, which gives the velocity structure of any jet or wind present. These will be compared with the expected results from existing models for young protostars of this mass. Radio continuum data will also be used to study the jets. Continuum radio data will quantify the mass loss rate from the star. The high spatial resolution offered by radio imaging will be used to study the evolution, further constraining the emission mechanism present.This project will combine near infrared spectroscopy and radio continuum imaging. The spectroscopy allows the study of the molecular absorption lines, which give the structure of the cool gas very near to the star, and hydrogen and helium emission lines, which gives the velocity structure of any jet or wind present. These will be compared with the expected results from existing models for young protostars of this mass. Radio continuum data will also be used to study the jets. Continuum radio data will quantify the mass loss rate from the star. The high spatial resolution offered by radio imaging will be used to study the evolution, further constraining the emission mechanism present.