CAREER: Observing the Physics of Star Formation in Galaxies

职业：观测星系中恒星形成的物理学

• 批准号: 1653300
• 负责人: Adam Leroy
• 金额: $ 58.26万
• 依托单位: Ohio State 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: 2017-06-01 至 2023-05-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1653300&HistoricalAwards=false
• 关键词: CAREER; Observing; Physics; Star; Formation

The team will use a new facility, the Atacama Large Millimeter/submillimeter Array (ALMA), to observe the cold gas inside galaxies. The team will study the details of how stars form in the cold gas. These details will enable strong tests of competing theories of star formation. Senior team members will mentor junior members, including undergraduate students who have disabilities. The PI will engage high school students from Ohio in hands-on, astronomy-themed projects.The team will use ALMA's unrivaled angular resolution, wavelength coverage and sensitivity to study the physical conditions in the cold gas inside galaxies. Their goals are to (1) measure the variations in volume densities to test theories that posit gas density as the main driver of star formation; (2) make the first systematic measurements of the cloud-scale structure, density, turbulence, and self-gravity of the gas in a representative sample of galaxies; (3) model the life-cycle of star-forming clouds and constrain the dominant cloud destruction mechanism; and (4) develop, refine, and disseminate new methods to handle the complex data analysis.

该团队将使用一种新的设备--阿塔卡马大毫米/亚毫米阵列(ALMA)--来观测星系内部的冷气体。该团队将研究恒星如何在冷气体中形成的细节。这些细节将使对恒星形成的相互竞争的理论进行强有力的测试。资深团队成员将指导初级成员，包括残疾本科生。PI将邀请来自俄亥俄州的高中生参与以天文学为主题的动手项目。该团队将使用ALMA无与伦比的角度分辨率、波长覆盖和灵敏度来研究星系内冷气体的物理条件。他们的目标是(1)测量体积密度的变化，以测试认为气体密度是恒星形成的主要驱动力的理论；(2)首次系统地测量具有代表性的星系样本中气体的云尺度结构、密度、湍流和自重；(3)对恒星形成云的生命周期进行建模，并限制主要的云破坏机制；以及(4)开发、改进和传播处理复杂数据分析的新方法。

项目成果

Pa β , H α , and Attenuation in NGC 5194 and NGC 6946

NGC 5194 和 NGC 6946 中的 Pa β 、H α 和衰减

• DOI: 10.3847/1538-4357/ab77a8
• 发表时间: 2020
• 期刊: The Astrophysical Journal
• 作者: Kessler, Sarah;Leroy, Adam;Querejeta, Miguel;Murphy, Eric;Rebolledo, David;Sandstrom, Karin;Schinnerer, Eva;Wong, Tony
• 通讯作者: Wong, Tony

Spatial power spectra of dust across the Local Group: No constraint on disc scale height

本集团灰尘的空间功率谱：对圆盘刻度高度没有限制

• DOI: 10.1093/mnras/stz3582
• 发表时间: 2019
• 期刊: Monthly Notices of the Royal Astronomical Society
• 影响因子: 4.8
• 作者: Koch, Eric W.;Chiang;Utomo, Dyas;Chastenet, Jérémy;Leroy, Adam K.;Rosolowsky, Erik W.;Sandstrom, Karin M.
• 通讯作者: Sandstrom, Karin M.

Star Formation Laws and Efficiencies across 80 Nearby Galaxies

附近 80 个星系的恒星形成规律和效率

• DOI: 10.3847/2041-8213/acbd9c
• 发表时间: 2023
• 期刊: The Astrophysical Journal Letters
• 作者: Sun 孙, Jiayi 嘉懿;Leroy, Adam K.;Ostriker, Eve C.;Meidt, Sharon;Rosolowsky, Erik;Schinnerer, Eva;Wilson, Christine D.;Utomo, Dyas;Belfiore, Francesco;Blanc, Guillermo A.
• 通讯作者: Blanc, Guillermo A.

On the duration of the embedded phase of star formation

• DOI: 10.1093/mnras/stab878
• 发表时间: 2020-11
• 期刊: Monthly Notices of the Royal Astronomical Society
• 影响因子: 4.8
• 作者: Jaeyeon Kim;M. Chevance;J. Kruijssen;A. Schruba;K. Sandstrom;A. Barnes;F. Bigiel;G. Blanc

Kinematics of the atomic ISM in M33 on 80 pc scales

M33 中原子 ISM 的运动学在 80 pc 尺度上

• DOI: 10.1093/mnras/sty1674
• 发表时间: 2018
• 期刊: Monthly Notices of the Royal Astronomical Society
• 影响因子: 4.8
• 作者: Koch, Eric W;Rosolowsky, Erik W;Lockman, Felix J;Kepley, Amanda A;Leroy, Adam;Schruba, Andreas;Braine, Jonathan;Dalcanton, Julianne;Johnson, Megan C;Stanimirović, Snežana
• 通讯作者: Stanimirović, Snežana