Institute of Astronomy

Chemical and kinematical studies of the Milky Way based on the LAMOST Galactic Spectroscopic Surveys

SpeakerTalk DateTalk Series
Yang Huang, KIAA Peking27 September 2017Institute of Astronomy Seminars

Abstract

One of the fundamental tasks of modern astrophysics is to understand how galaxies form and evolve. Generally, the quest can be pursed in two ways: statistical analyses of large samples of distant galaxies (deep-field cosmology) and detailed studies of large samples of member stars in the Local Group of galaxies including our own, the Milky Way (near-field cosmology). Initiated and aimed to make a major contribution to this latter, ‘near-field cosmology’ quest for understanding the galaxy formation and evolution, the LAMOST Galactic Spectroscopic Surveys have hitherto collected quality spectra of over 7.5M Galactic stars, and this number is still increasing at a rate of 1M per annum. Combining with data from other available photometric, astrometric and spectroscopic surveys (e.g. Gaia), the Surveys have yielded a unique dataset to help us draw an exquisite picture of unprecedented detail of our Galaxy , in particular of the Galactic disk. In this talk, I will present some of our recent work on the study of the chemical and kinematical properties of the Milky Way based on this huge LAMOST dataset.

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