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张曾华 | 副教授 (Zenghua ZHANG, Associate Professor, PhD, FRAS); 天体物理学 博导 (PhD supervisor in Astrophysics)
个人介绍

张曾华于2019年12月作为一名副教授加入了南京大学 天文与空间科学学院。2017-2019年,他是法国 巴黎天文台 (默东校区) 的一名 PSL fellow (巴黎文理大学 博士后学者)。2013-2016年,他是西班牙加那利天体物理研究所 的一名 IAC fellow 博士后学者。2008-2013年,他在英国哈特福德郡大学 天体物理研究中心攻读天体物理学博士学位,并做了一年博士后研究工作。2005-2008年,他在 云南天文台 和 中国科学院 大学 取得了天体物理学硕士学位。2000-2004年,他在烟台大学取得了应用物理学学士学位。张曾华出生于山东省 泰安市。他是 A&A, AJ, ApJ, Nature 等学术期刊的审稿人,也是韦伯太空望远镜 (JWST) 2026和2027年观测提案的外部评审专家。 

 

Zenghua joined the School of Astronomy and Space Science at the Nanjing University as an associate professor in December 2019. From 2017 to 2019, he was a PSL fellow at the the Observatoire de Paris in Meudon, France. From 2013 to 2016, he was an IAC fellow at the Instituto de Astrofisica de Canarias in Tenerife, Spain. He completed his PhD in astrophysics and worked as a researcher at the Centre for Astrophysics Research, University of Hertfordshire, UK, from 2008 to 2013. He completed his MSc in astrophysics at the Yunnan Observatories, Chinese Academy of Sciences, from 2005 to 2008. He earned a BSc in applied physics at the Yantai University from 2000 to 2004. Zenghua was born and raised in Tai'an, Shandong province, China. He is a referee for A&A, AJ, ApJ, and Nature journals, and an external reviewer for JWST cycles 6 and 7 proposals. 

承担课程

《天文洞察》系列讲座,秋季全校公选课(2024, 2026-)

《实测天体物理》(2025)

《科研提案与科技论文撰写》本研合(2020-2023)

《走进天文》系列讲座,秋季全校公选课(2022, 2023)


研究领域

1. L型亚矮星的探测、发现、光谱分类、星族的观测和物理特性 (Primeval - I; Primeval - IV; Zhang+18c; Primeval - V)。

2. 探测银河系中金属丰度最低的甚小质量恒星、过渡型褐矮星 (T-BD; Primeval - II, 新闻发布; Primeval - III) 和简并褐矮星 (D-BD; Primeval - VI)。

3. 以含有超冷矮星的双星系统作为基准,研究甚小质量恒星和褐矮星的观测和物理特性(Burgasser+25, 新闻发布; Benchmark - I; 新闻发布 ; Primeval - VIII, 新闻发布; Primeval - VII; Zhang+13; Zhang+10, 新闻发布; Pavlenko+15)。

4. 通过大尺度巡天发现和研究超冷矮星 (Zhang+09; Burningham+10; Day-Jones+13)。

 

1. Characterization of L subdwarfs: discovery, classification, atmospheric and population properties (Primeval - I; Primeval - IV; Zhang+18c; Primeval - V).

2. Search for the most metal-poor very low-mass stars, transitional brown dwarfs (T-BD; Primeval - II, Press release; Primeval - III) and degenerate brown dwarfs (D-BD; Primeval - VI) in the Milky Way.

3. Revealing the observational and physical properties of very low-mass stars and brown dwarfs with benchmarks in binary systems (Burgasser+25, press; Benchmark - I, Press release; Primeval - VIII, Press release; Primeval - VII; Zhang+13; Zhang+10, Press release; Pavlenko+15).

4. Discovery and characterization of ultracool dwarfs in large scale surveys (Zhang+09; Burningham+10; Day-Jones+13; Li+26).

 

新闻发布:

2026.3.3 南大本科生利用韦伯太空望远镜发现两颗遥远褐矮星(南京大学 天文与空间科学学院;MNRAS 论文)

2025.10.3 天文学家在首次在太阳系外天体上清晰的观测到磷化氢(南京大学天文与空间科学学院; 论文 Science, arXiv)

2025.8.19 天文学家发现罕见的两级四星系统:一对低温褐矮星围绕一对年轻红矮星运行 (南京大学科技动态;天文与空间科学学院

2024.8.20 银河里的"华尔兹":首个白矮星+超冷亚矮星双星系统 (南京大学科技动态;天文与空间科学学院)

 

Press releases:

2025.10.3 "Detection of Phosphine in a Brown Dwarf Atmosphere Raises More Questions" UC San Diego; Science, arXiv

2025.8.19 "Rare quadruple star system could unlock mystery of brown dwarfs" Royal Astronomical Society; Nanjing University; School of Astronomy; CAB (Spanish); LNA (Portuguese); 

2024.8.20 "Waltz" in the Milky Way: The first age benchmark ultracool subdwarf with a white dwarf companion (Nanjing University; School of Astronomy; ESA Gaia Image of the Week; Uni. of Hertforshire; Centro de Astrobiología) 


学术发表文章

ADS library of first author publications

ADS library of all publications

 

The Primeval very low-mass stars and brown dwarfs series (ADS library):

Primeval - I. Six new L subdwarfs, classification and atmospheric properties (free access)

Primeval - II. The most metal-poor substellar object (free access)

Primeval - III. The halo transitional brown dwarfs (free access)

Primeval - IV. New L subdwarfs, Gaia astrometry, population properties, and a blue brown dwarf binary (MNRAS, arXiv)

Primeval - V. A halo L3 subdwarf with prograde eccentric orbit in the Galactic plane (free access)

Primeval - VI. Population properties of metal-poor degenerate brown dwarfs (free access)

Primeval - VII. The discovery of the first wide M+L extreme subdwarf binary (MNRAS, arXiv)

Primeval - VIII. The first age benchmark L subdwarf, a wide companion to a halo white dwarf (open access) 

The Substellar Transition Zone: A Stretched Temperature Canyon in Brown Dwarf Population due to Unsteady Hydrogen Fusion (arXiv)

 

The Benchmark brown dwarfs series (ADS library):

Benchamrk - I. A blue M2 + T5 wide binary and a probable young [M4 + M4] + [T7 + T8] hierarchical quadruple (open access)