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The Galactic mass distribution from the LAMOST Galactic spectroscopic surveys

  • Y. Huang (a1) (a2), X.-W. Liu (a1), H.-B. Yuan (a3), H.-W. Zhang (a1), M.-S. Xiang (a4) (a2), B.-Q. Chen (a1) (a2) and C. Wang (a1)...


Using the data from the LAMOST Galactic spectroscopic surveys and some other surveys, we have started a series of work to measure the mass distribution of our Galaxy. As a result of the first-stage, we have constructed the Galactic rotation curve out to 100 kpc and the Galactic escape velocity curve between 5 and 14 kpc. From the two curves, we have built parametrized mass models for our Galaxy, respectively. Both models yield a similar result for the Milky Way's virial mass: ~ 0.9 × 1012 M.



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Proceedings of the International Astronomical Union
  • ISSN: 1743-9213
  • EISSN: 1743-9221
  • URL: /core/journals/proceedings-of-the-international-astronomical-union
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