Studying Planet Formation by Mapping Small-scale Structures in Circumstellar Disks

通过绘制星周盘中的小尺度结构来研究行星的形成

• 批准号: 1715719
• 负责人: Andrea Isella
• 金额: $ 48.71万
• 依托单位: William Marsh Rice University
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2017
• 资助国家: 美国
• 起止时间: 2017-09-01 至 2021-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1715719&HistoricalAwards=false
• 关键词: Studying; Planet; Formation; Mapping; Small

Planets formed from material in disks that once surrounded the stars they orbit. Part of this process includes this material clumping into larger grains or pieces. With the new Atacama Large Millimeter/submillimeter Array (ALMA) and Jansky Very Large Array (VLA) radio telescopes, it is now possible to see material well into the zones in many of these disks where planets are forming. In this project, the investigators will look first for clumps of dust of different sizes and structures in disks around other stars. They will then study how the different structures affect the distribution of dust pieces having different sizes. Finally, they will measure how the dust pieces are spread in the disk with respect to gases of different molecules. The goal of this project is to learn whether the different observed structures trap solid dust pieces. This project serves the national interest by advancing our understanding of the science behind the formation of planetary systems. A postdoctoral scholar and a graduate student will conduct the research. All of the raw and processed data will be available to the scientific community.This project will study the formation of planets by mapping small-scale structures in nearby circumstellar disks around pre-main sequence stars, using ALMA and VLA radio observations that will resolve material well into the planet-forming zones of a large sample of disks. The research has three main goals. First, quantify the prevalence and morphology of small-scale structures in the distribution of dust particles. This will be achieved by mapping the 1.3 mm dust continuum emission in 20 nearby disks at an angular resolution of about 0.04". Second, study how these structures affect the distribution of dust grains with different sizes. To do this, multi-wavelength observations between 0.87 mm and 1 cm, which probe the distribution of mm- and cm-sized dust grains, will be acquired. Third, measure the distribution of dust particles relative to the molecular gas. This goal will be achieved by mapping the molecular line emission (e.g., CO) from disks characterized by substructures at an angular resolution comparable to that of the continuum maps. The goal is to understand if the observed structures trap solid dust particles, therefore solving the long-standing radial migration problem. A postdoctoral scholar and a graduate student will conduct the data analysis and publication of the results. Additionally, the scientific community will receive access to the full suite of data products derived from this program.

行星是由磁盘中的材料形成的，这些磁盘曾经围绕着它们绕着星星绕的恒星。 此过程的一部分包括将这种材料汇成大型谷物或碎片。 有了新的Atacama大毫米/亚毫米阵列（ALMA）和Jansky非常大的阵列（VLA）射电望远镜，现在可以在许多行星形成的许多磁盘中可以看到材料进入区域。 在这个项目中，研究人员将首先寻找其他恒星周围磁盘中不同尺寸和结构的灰尘。 然后，他们将研究不同结构如何影响具有不同尺寸的灰尘碎片的分布。 最后，他们将根据不同分子的气体来测量粉尘块如何在磁盘中散布。 该项目的目的是了解不同观察到的结构是否捕获固体灰尘块。 该项目通过促进我们对行星体系形成背后的科学的理解来为国家利益提供服务。 博士后学者和研究生将进行研究。 该项目将使用ALMA和VLA无线电观察结果，将所有原始数据和处理的数据都提供给科学界。该项目将通过绘制附近甲壳磁盘附近的室外磁盘中的小规模结构来研究行星的形成，这些结构将通过ALMA和VLA无线电观察结果很好地解决材料，从而使材料很好地解决了大型群落的行星区域。 该研究具有三个主要目标。 首先，量化小尺度结构在灰尘颗粒分布中的普遍性和形态。 This will be achieved by mapping the 1.3 mm dust continuum emission in 20 nearby disks at an angular resolution of about 0.04". Second, study how these structures affect the distribution of dust grains with different sizes. To do this, multi-wavelength observations between 0.87 mm and 1 cm, which probe the distribution of mm- and cm-sized dust grains, will be acquired. Third, measure the distribution of dust particles relative to the molecular气体将通过与连续图相当的磁盘来映射分子线发射（例如，CO）。从该程序得出的完整数据产品套件。

项目成果

A Circumplanetary Disk around PDS70c

• DOI: 10.3847/2041-8213/ac0f83
• 发表时间: 2021-07-01
• 期刊: ASTROPHYSICAL JOURNAL LETTERS
• 影响因子: 7.9
• 作者: Benisty, Myriam;Bae, Jaehan;Zurlo, Alice
• 通讯作者: Zurlo, Alice

Nine Localized Deviations from Keplerian Rotation in the DSHARP Circumstellar Disks: Kinematic Evidence for Protoplanets Carving the Gaps

• DOI: 10.3847/2041-8213/ab6dda
• 发表时间: 2020-01
• 期刊: The Astrophysical Journal Letters
• 作者: C. Pinte;Daniel J. Price;F. Menard;G. Duchêne;V. Christiaens;S. Andrews;Jane Huang;Tracey Hill;G. V. D. Plas;L. M. Pérez;A. Isella;Y. Boehler;W. Dent;D. Mentiplay;R. Loomis

The Disk Substructures at High Angular Resolution Project (DSHARP). IX. A High-definition Study of the HD 163296 Planet-forming Disk

• DOI: 10.3847/2041-8213/aaf747
• 发表时间: 2018-12
• 期刊: The Astrophysical Journal Letters
• 作者: A. Isella;Jane Huang;S. Andrews;C. Dullemond;T. Birnstiel;Shangjia Zhang;Zhaohuan Zhu;V. Guzm'an-V.-Guzm'a

The Disk Substructures at High Angular Resolution Project (DSHARP). X. Multiple Rings, a Misaligned Inner Disk, and a Bright Arc in the Disk around the T Tauri star HD 143006

• DOI: 10.3847/2041-8213/aaf745
• 发表时间: 2018-12
• 期刊: The Astrophysical Journal Letters
• 作者: L. P'erez;M. Benisty;S. Andrews;A. Isella;C. Dullemond;Jane Huang;N. Kurtovic;V. Guzm'an

The Disk Substructures at High Angular Resolution Project (DSHARP). I. Motivation, Sample, Calibration, and Overview

• DOI: 10.3847/2041-8213/aaf741
• 发表时间: 2018-12-20
• 期刊: ASTROPHYSICAL JOURNAL LETTERS
• 影响因子: 7.9
• 作者: Andrews, Sean M.;Huang, Jane;Ricci, Luca
• 通讯作者: Ricci, Luca