Gaps, rings, and spirals in scattered light: Discs observed around Herbig Ae/Be and T-Tauri stars

散射光中的间隙、环和螺旋：在 Herbig Ae/Be 和 T-Tauri 恒星周围观察到的圆盘

• 批准号: 1918673
• 金额: --
• 依托单位: UNIVERSITY OF EXETER
• 依托单位国家: 英国
• 项目类别: Studentship
• 财政年份: 2017
• 资助国家: 英国
• 起止时间: 2017 至 无数据
• 项目状态: 已结题
• 来源: https://gtr.ukri.org/projects?ref=studentship-1918673
• 关键词: Gaps; rings; spirals; scattered; light

Planets form in the discs of gas and dust that encircle newly formed protostars. The growing planets accrete disc material, creating annular gaps, and the disc/planet gravitational interaction results in spiral waves in the disc structure. Since the protoplanet itself is essentially undetectable at this early stage it is these large-scale perturbations that are regarded as the fingerprints of on-going planet formation.Although on solar system scales these planet-forming discs may be very large (extending to many 100 AUs) the nearest such objects are on the order of 100 parsecs away. Thus a planet-forming disc may only subtend an arcsecond as seen from the Earth. Fortunately we are currently in a golden age of high-resolution instrumentation enabling us to probe the structure of protoplanetary discs in unprecedented detail. Our team is fortunate to have data on a large sample of these so-called transitional discs, taken with instruments such as Gemini's GPI and the VLT's SPHERE.The aim of this project is to model this wealth of observational data using our sophisticated radiative-transfer code TORUS. These models will enable us to determine the structure of the protoplanetary discs as well as the composition of the dust within them, and will thus help us to identify the conditions necessary for planet formation.

行星是在围绕新形成的原恒星的气体和尘埃盘中形成的。生长的行星吸积圆盘材料，形成环形间隙，圆盘/行星引力相互作用导致圆盘结构中产生螺旋波。由于原行星本身在早期阶段基本上是无法检测到的，因此这些大规模的扰动被视为正在进行的行星形成的指纹。尽管在太阳系尺度上，这些行星形成盘可能非常大（延伸到100多个） AU）最近的此类物体距离大约 100 秒差距。因此，从地球上看，行星形成盘可能只包含一角秒。幸运的是，我们目前正处于高分辨率仪器的黄金时代，使我们能够以前所未有的细节探测原行星盘的结构。我们的团队很幸运地拥有这些所谓的过渡盘的大量样本数据，这些数据是使用 Gemini 的 GPI 和 VLT 的 SPHERE 等仪器获取的。该项目的目的是使用我们复杂的辐射传输模型对这些丰富的观测数据进行建模代码圆环。这些模型将使我们能够确定原行星盘的结构以及其中尘埃的成分，从而帮助我们确定行星形成所需的条件。

项目成果

A triple star system with a misaligned and warped circumstellar disk shaped by disk tearing

三星系统，其星周盘因盘撕裂而形成错位且扭曲的形状

• DOI: http://dx.10.48550/arxiv.2004.01204
• 发表时间: 2020
• 作者: Kraus S

Irregular dust features around intermediate-mass young stars with GPI: signs of youth or misaligned disks?

具有 GPI 的中等质量年轻恒星周围的不规则尘埃特征：年轻的迹象还是盘面错位的迹象？

• DOI: http://dx.10.48550/arxiv.1911.04214
• 发表时间: 2019
• 作者: Laws A

A triple-star system with a misaligned and warped circumstellar disk shaped by disk tearing

一个三星系统，其星周盘因盘撕裂而形成错位且扭曲的形状

• DOI: http://dx.10.1126/science.aba4633
• 发表时间: 2020
• 期刊: Science
• 影响因子: 56.9
• 作者: Kraus S

Multiple Spiral Arms in the Disk around Intermediate-mass Binary HD 34700A

盘中围绕中等质量二元 HD 34700A 的多个螺旋臂

• DOI: 10.3847/1538-4357/aafe87
• 发表时间: 2019-01-08
• 期刊: The Astrophysical Journal
• 作者: J. Monnier;T. Harries;J. Bae;B. Setterholm;A. Laws;A. Aarnio;F. Adams;S. Andrews;N. Calvet
• 通讯作者: N. Calvet

Scattering and sublimation: a multi-scale view of $µ$m-sized dust in the inclined disc of HD 145718

散射与升华：HD 145718 倾斜圆盘中微米级灰尘的多尺度视图

• DOI: http://dx.10.48550/arxiv.2201.06472
• 发表时间: 2022
• 作者: Davies C