name:郑振亚
sex:男
shrz:
channel:专家人才库
pic:http://sourcedb.shao.cas.cn/zw/zjrck/201804/P020****.jpg
url:http://sourcedb.shao.cas.cn/zw/zjrck/201804/t**_**.json
xklb:天体物理
xl:博士研究生
dh:
zc:研究员
zw:
yzbm:200030
dzyj:zhengzy@shao.ac.cn
txdz:上海市南丹路80号
grwy:
grjj:1984年<\/span>4<\/font><\/span>月生，上海天文台研究<\/span>员<\/span>、博士生<\/span>导师<\/span>。分<\/span>别<\/span>于<\/span>2006<\/font><\/span>年和<\/span>2012<\/font><\/span>年<\/span>获<\/span>得中国科学技<\/span>术<\/span>大学天文学学士和博士学位。随后<\/span>获<\/span>得美国<\/span>亚<\/span>利桑那州立大学（<\/span>Arizona State University<\/font><\/span>）<\/span> SESE Exploration<\/font><\/span>博士后<\/span>项目的支持<\/span>，开展<\/span>2<\/font><\/span>年的博士后研究工作。之后<\/span>获<\/span>得首届中智天文博士后<\/span>项<\/span>目的支持，在智利天主教大学开展<\/span>2<\/font><\/span>年博士后研究工作。<\/span>2016<\/font><\/span>年<\/span>11<\/font><\/span>月入<\/span>职<\/span>上海天文台，<\/span>获<\/span>得中国科学院“<\/span>创<\/span>新行<\/span>动<\/span>”<\/span>青年俊才<\/span>项<\/span>目支持，<\/span>获<\/span>得上海市浦江****<\/span>项<\/span>目支持。<\/span>现<\/span>主持国家自然科学基金面上<\/span>项<\/span>目一<\/span>项<\/span>，中智天文<\/span>联<\/span>合<\/span>项<\/span>目一<\/span>项，并曾经<\/span>主持多<\/span>项光学<\/span>天文<\/span>观测项<\/span>目。主要研究<\/span>兴<\/span>趣是星系和宇宙学的<\/span>观测<\/span>研究，<\/span> <\/font><\/span>在此<\/span>领<\/span>域具有世界一流天文台近百个晚上的<\/span>观测经验<\/span>。具体研究<\/span>对<\/span>象包括遥<\/span>远<\/span>星系、<\/span>类<\/span>星体和活<\/span>动<\/span>星系核、大<\/span>质<\/span>量黑洞以及<\/span>观测<\/span>宇宙学等。截止<\/span>2017<\/font><\/span>年，已<\/span>发<\/span>表<\/span>20<\/font><\/span>多篇学<\/span>术<\/span>期刊<\/span>论<\/span>文。<\/span><\/o:p><\/span><\/font><\/font><\/font><\/font><\/font><\/font><\/span><\/font><\/p>
hjjry:
dblz:代表<\/span>论<\/span>著：<\/span><\/o:p><\/span><\/font><\/font><\/font><\/p>1. Zheng, Z.Y., Wang, J. X., Rhoads, J. E., et al., “First Results from the Lyman Alpha Galaxies in the Epoch of Reionization (LAGER) Survey: Cosmological Reionization at z ？ 7”, 2017, ApJL, 842, 22<\/o:p><\/font><\/font><\/font><\/font><\/span><\/p>2. Zheng, Z.Y., Malhotra, S., Rhoads, J.E., et al., <\/font><\/span>“<\/span>Lyα Emitter Galaxies at z～ 2.8 in the Extended Chandra Deep Field South. I. Tracing the Large-scale Structure via Lyα Imaging”, 2016a, ApJS, 226, 23<\/o:p><\/font><\/span><\/font><\/font><\/font><\/p>3. Zheng, Z.Y., Bulter, N., Shen, Y., et al., “SDSS J0159+0105: A Radio-Quiet Quasar with a Centi-Parsec Supermassive Black Hole Binary Candidate<\/font><\/span>”<\/span>, 2016, ApJ, 827, 56<\/o:p><\/font><\/span><\/font><\/font><\/font><\/p>4. Zheng, Z.Y., Wang, J.X., Malhotra, S., et al., “Lyα equivalent width distribution of Lyα emitting galaxies at redshift z ？ 4.5”, 2014, MNRAS, 827, 56<\/o:p><\/font><\/font><\/font><\/font><\/span><\/p>5. Zheng, Z.Y., Finkelstein, S. L., Finkelstein, K., et al., “Lyα luminosity functions at redshift z ≈ 4.5”, 2013, MNRAS, 431, 3589<\/o:p><\/font><\/font><\/font><\/font><\/span><\/p>6. Zheng, Z.Y., Malhotra, S., Wang, J.X., et al., “X-Ray Constraints on the Lyα Escape Fraction”, 2012, ApJ, 746, 28<\/o:p><\/font><\/font><\/font><\/font><\/span><\/p>7. Hu, W.D., Wang, J.X., Zheng, Z.Y., et al. “First Spectroscopic Confirmations of z ？ 7.0 Lyα Emitting Galaxies in the LAGER Survey”, 2017, ApJL, 845, 16<\/o:p><\/font><\/font><\/font><\/font><\/span><\/p>8. Jiang, L.H., Shen, Y., Bian, F.Y., Zheng, Z.Y., et al., “A Magellan M2FS Spectroscopic Survey of Galaxies at 5.5 < z < 6.8: Program Overview and a Sample of the Brightest Lyα Emitters”, 2017, ApJ, 846, 134<\/o:p><\/font><\/font><\/font><\/font><\/span><\/p>9. Wardlow, J. L., Malhotra, S., Zheng, Z.Y., et al., “Constraining the Lyα Escape Fraction with Far-infrared Observations of Lyα Emitters”, 2014, ApJ, 787, 9<\/o:p><\/font><\/font><\/font><\/font><\/span><\/p>10<\/span>.<\/span> Yang, H., Wang, J.X., Zheng, Z.Y., et al., “A z ~ 5.7 Lyα Emission Line with an Ultrabroad Red Wing”, 2014, ApJ, 784, 35<\/o:p><\/span><\/font><\/font><\/font><\/font><\/p>
cdkyxmqk:
yjfx:研究的主要方向如下：<\/font><\/p>一、宇宙再电离时期的观测研究
宇宙再电离过程涉及到整个宇宙的最后一次相变过程（中性氢变成电离氢），也涉及到宇宙第一代恒星和星系的形成，因而对宇宙再电离时期和其中的星系的研究一直是天体物理的前沿领域之一。我们正在推进一项国际合作的、世界范围最大的寻找红移7（再电离中心时期）的星系巡天项目-LAGER项目。我们已经获得了早期宇宙该处最大的一批星系样本，并用此限制宇宙中性氢的比例（Zheng+2017）。我们正在继续该巡天，以期在更大的天区，获得更多的样本，并从多方面，如成团性、光度函数分布、等值宽度分布等去研究早期宇宙星系的特征，探索宇宙再电离的历史和拓扑结构等。<\/font><\/font><\/font><\/font><\/p>二、早期星系的演化和宇宙大尺度结构的观测研究
恒星形成星系的电离光子可以大量转化为莱曼阿尔法光子，使得莱曼阿尔法发射线星系能够作为星系演化和宇宙大尺度结构的绝佳探索样本。我们在宇宙不同年龄处进行的窄带滤波片巡天已经发现了一批的莱曼阿尔法发射线星系。利用该样本，我们成功发现了红移2.8处的大尺度结构（Zheng+2016a），并研究了莱曼阿尔法发射线星系的演化（Zheng+2012, 2013, 2014, 2016a）。当前我们正在结合天文多波段数据，探索这批样本的其它性质。<\/font><\/p>三、光学巡天大数据和星系核区光变事件
随着最近几年各类光学时变巡天项目的发展，时变天文和光学大数据领域正在面临海量新数据和大量新发现。我们利用CRTS巡天数据，应用新的统计方法，成功发现了一颗宁静星系里的超大质量双黑洞候选者(Zheng+2016b)。目前，新的统计方法和数据挖掘工作正在开展，对有趣目标源的后续多波段观测也在进行中。<\/font><\/p>研究方向：
高红移星系、宇宙再电离、活动星系核光变、超大质量双黑洞<\/font><\/p>课题组介绍：<\/font>http:\/\/astro.shao.cas.cn\/yjtz\/201903\/t**_479345.html<\/font><\/a><\/p>
xmen:Zhenya Zheng
education:
at:Professor
add:80 Nandan Road, Shanghai 200030,P.R.China
dblz_en:代表<\/span>论<\/span>著：<\/span><\/o:p><\/span><\/font><\/font><\/p>1. Zheng, Z.Y., Wang, J. X., Rhoads, J. E., et al., “First Results from the Lyman Alpha Galaxies in the Epoch of Reionization (LAGER) Survey: Cosmological Reionization at z ？ 7”, 2017, ApJL, 842, 22<\/o:p><\/font><\/span><\/font><\/font><\/p>2. Zheng, Z.Y., Malhotra, S., Rhoads, J.E., et al., <\/font><\/span>“<\/span>Lyα Emitter Galaxies at z～ 2.8 in the Extended Chandra Deep Field South. I. Tracing the Large-scale Structure via Lyα Imaging”, 2016a, ApJS, 226, 23<\/o:p><\/font><\/span><\/font><\/font><\/p>3. Zheng, Z.Y., Bulter, N., Shen, Y., et al., “SDSS J0159+0105: A Radio-Quiet Quasar with a Centi-Parsec Supermassive Black Hole Binary Candidate<\/font><\/span>”<\/span>, 2016, ApJ, 827, 56<\/o:p><\/font><\/span><\/font><\/font><\/p>4. Zheng, Z.Y., Wang, J.X., Malhotra, S., et al., “Lyα equivalent width distribution of Lyα emitting galaxies at redshift z ？ 4.5”, 2014, MNRAS, 827, 56<\/o:p><\/font><\/span><\/font><\/font><\/p>5. Zheng, Z.Y., Finkelstein, S. L., Finkelstein, K., et al., “Lyα luminosity functions at redshift z ≈ 4.5”, 2013, MNRAS, 431, 3589<\/o:p><\/font><\/span><\/font><\/font><\/p>6. Zheng, Z.Y., Malhotra, S., Wang, J.X., et al., “X-Ray Constraints on the Lyα Escape Fraction”, 2012, ApJ, 746, 28<\/o:p><\/font><\/span><\/font><\/font><\/p>7. Hu, W.D., Wang, J.X., Zheng, Z.Y., et al. “First Spectroscopic Confirmations of z ？ 7.0 Lyα Emitting Galaxies in the LAGER Survey”, 2017, ApJL, 845, 16<\/o:p><\/font><\/span><\/font><\/font><\/p>8. Jiang, L.H., Shen, Y., Bian, F.Y., Zheng, Z.Y., et al., “A Magellan M2FS Spectroscopic Survey of Galaxies at 5.5 < z < 6.8: Program Overview and a Sample of the Brightest Lyα Emitters”, 2017, ApJ, 846, 134<\/o:p><\/font><\/span><\/font><\/font><\/p>9. Wardlow, J. L., Malhotra, S., Zheng, Z.Y., et al., “Constraining the Lyα Escape Fraction with Far-infrared Observations of Lyα Emitters”, 2014, ApJ, 787, 9<\/o:p><\/font><\/span><\/font><\/font><\/p>10<\/span>.<\/span> Yang, H., Wang, J.X., Zheng, Z.Y., et al., “A z ~ 5.7 Lyα Emission Line with an Ultrabroad Red Wing”, 2014, ApJ, 784, 35<\/o:p><\/span><\/font><\/font><\/font><\/p>
jl_en: