基本信息
浏览量:411
![](https://originalfileserver.aminer.cn/sys/aminer/icon/show-trajectory.png)
个人简介
Prof. Zaritsky, in a collaboration including UA undergraduate and graduate students, is undertaking a large program to survey nearly a third of the sky for ultra-diffuse galaxies (UDGs). The largest of these galaxies appear to be analogs to the Large Magellanic Cloud that have only formed only 1 to 10% as many stars. As such, they are dark matter dominated at all radii and provide the first known examples of dark matter halos that have total masses of possibly up to 10^12 solar masses and which have been relatively undisturbed by baryonic processes. The program involves using the DESI preimaging data to identify candidates and then various techniques to estimate or measure redshifts, including the use of the Large Binocular Telescope.
Prof. Zaritsky, in collaboration with UA postdoctoral fellow Huanian Zhang, is utilizing the millions of spectra provided by the Sloan Digital Sky Survey in a novel approach to produce the first measurements ever of diffuse Halpha emission from intermediate temperature gas in the halos of nearby galaxies. The detection of Halpha emission in other halos enables directed surveys of nearby galaxies (because the gas is in emission bright background sources against which to measure absorption are no longer needed). This work opens up a new avenue for the exploration of this important, perhaps dominant, baryonic component of galaxies. As part of the Aspera satellite team, Prof. Zaritsky is also planning to explore the higher temperature phase of the circumgalactic gas.
Prof. Zaritsky, in collaboration Prof. Charlie Conroy's team at Harvard, is compiling the largest sample of Milky Way halo stars at large distance with high dispersion spectra to address a variety of questions regarding the accretion history of the Milky Way and probe the gravitational potential of the Milky Way at large distances. The survey is roughly 60% complete and the team has already published several key results regarding the nature of structure in the halo.
Prof. Zaritsky, in collaboration with UA postdoctoral fellow Huanian Zhang, is utilizing the millions of spectra provided by the Sloan Digital Sky Survey in a novel approach to produce the first measurements ever of diffuse Halpha emission from intermediate temperature gas in the halos of nearby galaxies. The detection of Halpha emission in other halos enables directed surveys of nearby galaxies (because the gas is in emission bright background sources against which to measure absorption are no longer needed). This work opens up a new avenue for the exploration of this important, perhaps dominant, baryonic component of galaxies. As part of the Aspera satellite team, Prof. Zaritsky is also planning to explore the higher temperature phase of the circumgalactic gas.
Prof. Zaritsky, in collaboration Prof. Charlie Conroy's team at Harvard, is compiling the largest sample of Milky Way halo stars at large distance with high dispersion spectra to address a variety of questions regarding the accretion history of the Milky Way and probe the gravitational potential of the Milky Way at large distances. The survey is roughly 60% complete and the team has already published several key results regarding the nature of structure in the halo.
研究兴趣
论文共 613 篇作者统计合作学者相似作者
按年份排序按引用量排序主题筛选期刊级别筛选合作者筛选合作机构筛选
时间
引用量
主题
期刊级别
合作者
合作机构
Aafaque R. Khan,Erika Hamden, Haeun Chung,Heejoo Choi,Daewook Kim, Nicole Melso,Keri Hoadley,Carlos J. Vargas, Daniel Truong, Elijah Garcia, Bill Verts, Fernando Coronado,
arxiv(2024)
引用0浏览0引用
0
0
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETYno. 3 (2024): 2512-2525
The Astronomical Journalno. 1 (2024): 45
ASTRONOMICAL JOURNALno. 2 (2024): 61
The Astronomical Journalno. 2 (2024): 69
Hayden R. Foote, Gurtina Besla, Nicolás Garavito-Camargo, Ekta Patel, Guillaume F. Thomas, Ana Bonaca,Adrian M. Price-Whelan, Annika H. G. Peter,Dennis Zaritsky,Charlie Conroy
arxiv(2024)
引用0浏览0引用
0
0
Ananthan Karunakaran, Khadeejah Motiwala, Kristine Spekkens,Dennis Zaritsky,Richard L. Donnerstein,Arjun Dey
arxiv(2024)
引用0浏览0引用
0
0
arxiv(2024)
引用0浏览0引用
0
0
加载更多
作者统计
#Papers: 607
#Citation: 33108
H-Index: 87
G-Index: 162
Sociability: 8
Diversity: 2
Activity: 136
合作学者
合作机构
D-Core
- 合作者
- 学生
- 导师
数据免责声明
页面数据均来自互联网公开来源、合作出版商和通过AI技术自动分析结果,我们不对页面数据的有效性、准确性、正确性、可靠性、完整性和及时性做出任何承诺和保证。若有疑问,可以通过电子邮件方式联系我们:report@aminer.cn