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Dwarf galaxies at low and high redshift

Published online by Cambridge University Press:  30 October 2019

Xu Kong ,
Jianhui Lian ,
Yulong Gao ,
Zuyi Chen ,
Guangwen Chen ,
Zesen Lin  and
Haiyang Liu
Xu Kong
Affiliation:
Key Laboratory for Research in Galaxies and Cosmology, Department of Astronomy, University of Science and Technology of China, Hefei 230026, China email: [email protected] School of Astronomy and Space Science, University of Science and Technology of China, Hefei 230026, China
Jianhui Lian
Affiliation:
Institute of Cosmology and Gravitation, University of Portsmouth, Burnaby Road, Portsmouth PO1 3FX, UK
Yulong Gao
Affiliation:
Key Laboratory for Research in Galaxies and Cosmology, Department of Astronomy, University of Science and Technology of China, Hefei 230026, China email: [email protected] School of Astronomy and Space Science, University of Science and Technology of China, Hefei 230026, China
Zuyi Chen
Affiliation:
Key Laboratory for Research in Galaxies and Cosmology, Department of Astronomy, University of Science and Technology of China, Hefei 230026, China email: [email protected] School of Astronomy and Space Science, University of Science and Technology of China, Hefei 230026, China
Guangwen Chen
Affiliation:
Key Laboratory for Research in Galaxies and Cosmology, Department of Astronomy, University of Science and Technology of China, Hefei 230026, China email: [email protected] School of Astronomy and Space Science, University of Science and Technology of China, Hefei 230026, China
Zesen Lin
Affiliation:
Key Laboratory for Research in Galaxies and Cosmology, Department of Astronomy, University of Science and Technology of China, Hefei 230026, China email: [email protected] School of Astronomy and Space Science, University of Science and Technology of China, Hefei 230026, China
Haiyang Liu
Affiliation:
Key Laboratory for Research in Galaxies and Cosmology, Department of Astronomy, University of Science and Technology of China, Hefei 230026, China email: [email protected] School of Astronomy and Space Science, University of Science and Technology of China, Hefei 230026, China
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Abstract

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The overwhelming majority of galaxies in the Universe are dwarf galaxies. But although they are important components in understanding galaxy evolution, these systems are typically too faint to be observed at high redshifts. However, we are able to obtain an unobscured view of early star formation and chemical enrichment in these galaxies at low redshift and low-redshift analogs at high redshift. In this talk, I will review the mass-metallicity relation, the mass-star formation rate relation of galaxies, the classifications of dwarf galaxies, and the importance of dwarf galaxies for both astronomy and physics. Then I will introduce some work in our group on connections among between different types of dwarf galaxies,the mass-metallicity relations and the main sequence relations of dwarf galaxies, using the deep optical and near infrared images and spectra of large dwarf galaxy sample. At the end, I will talk about some projects of dwarf galaxies we are working on, including the spectroscopic survey for compact dwarf galaxies using the LAMOST.

Keywords

galaxies: dwarfgalaxies: evolutiongalaxies: fundamental parametersgalaxies: high-redshiftgalaxies: starburst
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 14 , Symposium S344: Dwarf Galaxies: From the Deep Universe to the Present , August 2018 , pp. 437 - 445
Copyright
© International Astronomical Union 2019 

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