Star formation and variability in M33 and other spiral galaxies

M33 和其他螺旋星系中的恒星形成和变异

• 批准号: 2224064
• 金额: --
• 依托单位: Keele University
• 依托单位国家: 英国
• 项目类别: Studentship
• 财政年份: 2018
• 资助国家: 英国
• 起止时间: 2018 至 无数据
• 项目状态: 已结题
• 来源: https://gtr.ukri.org/projects?ref=studentship-2224064
• 关键词: Star; formation; variability; M33; other

The nearest spiral galaxies in particular provide the exciting new opportunity of bridging the gap between star formation processes on large galactic-wide scales and on the small scales of individual young stellar objects (so far only possible in the nearby Magellanic Clouds, which are quite different from the Milky Way). The project starts with the identification of Young Stellar Objects (YSOs) in the nearby spiral galaxy M33. Our exquisite near-infrared data obtained with the UKIRT telescope, in combination with existing mid-infrared data from the Spitzer Space Telescope, will allow a student to develop photometric techniques for the identification of such objects, building on Dr. Oliveira's experience in this area. Since these data offer multi-epoch observations, a motivated student will be able to study variability of massive YSOs, in order to probe the accretion process, similar to studies conducted in the Milky Way (VVV survey) and the Magellanic Clouds (VMC). The launch of JWST in Spring 2019 will offer the opportunity to extend such photometric studies to other spiral galaxies.

特别是最近的旋涡星系提供了一个令人兴奋的新机会，可以弥合银河系范围内大尺度上的星星形成过程与单个年轻恒星物体的小尺度上的差距（到目前为止，只有在附近的麦哲伦云中才有可能，麦哲伦云与银河系完全不同）。该项目首先确定附近螺旋星系M33中的年轻恒星天体（YSO）。我们用UKIRT望远镜获得的精密的近红外数据，结合斯皮策空间望远镜现有的中红外数据，将使学生能够根据Oliveira博士在这一领域的经验，开发用于识别此类物体的光度技术。由于这些数据提供了多时期的观测，一个有动力的学生将能够研究大质量YSO的变化，以探测吸积过程，类似于在银河系（VVV调查）和麦哲伦云（VMC）进行的研究。2019年春季推出的JWST将提供将此类光度研究扩展到其他螺旋星系的机会。