• DOI:10.1093/mnras/sty2924
Corpus ID: 55640088

The GALAH survey: velocity fluctuations in the Milky Way using red clump giants

@article{Khanna2018TheGS,
  title={The GALAH survey: velocity fluctuations in the Milky Way using red clump giants},
  author={S. Khanna and S. Sharma and J. Bland-hawthorn and M. Hayden and D. Nataf and Yuan-sen Ting and J. Kos and S. Martell and T. Zwitter and G. D. Silva and M. Asplund and S. Buder and L. Duong and J. Lin and J. Simpson and B. Anguiano and J. Horner and P. Kafle and G. F. Lewis and T. Nordlander and R. Wyse and R. Wittenmyer and D. Zucker},
  journal={Monthly Notices of the Royal Astronomical Society},
  year={2018},
  volume={482},
  pages={4215-4232}
}

S. Khanna, S. Sharma, +20 authors D. Zucker

Published 2018

Physics

Monthly Notices of the Royal Astronomical Society

If the Galaxy is axisymmetric and in dynamical equilibrium, we expect negligible fluctuations in the residual line-of-sight velocity field. However, non-axisymmetric structures like a bar, spiral arms and merger events can generate velocity fluctuations. Recent results using the APOGEE survey find significant fluctuations in velocity for stars in the midplane (|z|< 0.25 kpc) and out to 5 kpc, which suggests that the dynamical influence of the Milky Way's bar extends out to the Solar… CONTINUE READING

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