Collaborative Research: Pioneering planet formation chemistry with ALMA

行星形成并由年轻恒星周围圆盘中的尘埃和气体组成。行星形成过程与盘中材料的化学性质有关：盘材料的化学性质决定行星形成的结果，而盘中的行星形成可能影响其化学。研究人员将使用阿塔卡马大毫米和亚毫米阵列(ALMA)绘制五颗年轻恒星周围圆盘的化学结构图。他们还将开发理论，利用他们观察到的化学物质的分布来约束这五个系统的行星形成模型。皮奥伯格将继续每年指导一名班纳克研究员，联合创始人皮伯金将继续提供关于招聘多样性和卓越的研讨会。他还将在一个会议上介绍研讨会。研究生和本科生将参与这项工作。该团队批准的ALMA大计划以25+个分子谱线上的5个原行星盘为目标，旨在阐明：1.尘埃和化学子结构之间的相互作用。观测的高角度分辨率将使它们能够绘制出尘埃亚结构和化学亚结构之间的关系。圆盘中分子的垂直分布。通过将高角分辨率观测与线激发分析相结合，该团队将约束垂直化学盘结构。有机分子和挥发性元素在行星形成带中的分布。该团队将建立一个磁盘化学子结构的目录，并开发一个适当的分类法。他们将对样本中的环、螺旋、高原、非轴对称过剩和耗尽、垂直发射层和其他观察到的子结构进行分类。该奖项反映了NSF的法定使命，并已通过使用基金会的智力优势和更广泛的影响审查标准进行评估，被认为值得支持。

Planets form and are composed of the dust and gas found in disks around young stars. The planet formation process is linked to the chemistry of the materials in the disks: the chemical properties of the disk material shape the outcome of planet formation, and planet formation in the disk is likely to affect its chemistry. The investigators will use the Atacama Large Millimeter and submillimeter Array (ALMA) to map the chemical structures of disks around five young stars. They will also develop theory to use the distribution of chemicals they observe to constrain planet formation models for the five systems. PI Oberg will continue mentoring a Banneker fellow each year, and co-PI Bergin will continue to offer a workshop on recruiting for both diversity and excellence. He will also present the workshop at a conference. Graduate and undergraduate students will be involved in the work.The team's approved ALMA Large Program targets 5 protoplanetary disks in 25+ individual molecular lines, and was designed to elucidate:1. the interplay between dust and chemical sub-structures. The high angular resolution of the observations will allow them to map out relationships between dust sub-structures and chemical sub-structures.2. the vertical distributions of molecules in disks. By combining high-angular resolution observations with line excitation analysis the team will constrain the vertical chemical disk structures.3. the distribution of organic molecules and volatile elements in the planet forming zone. The team will construct a catalogue of disk chemical sub-structures and develop an appropriate taxonomy. They will catalogue rings, spirals, plateaus, non-axisymmetric excesses and depletions, vertical emission layers, and other observed sub-structures across the sample.This award reflects NSF's statutory mission and has been deemed worthy of support through evaluation using the Foundation's intellectual merit and broader impacts review criteria.