The Orbit and Origin of the Ultra-faint Dwarf Galaxy Segue~1

@article{Fritz2017TheOA,
  title={The Orbit and Origin of the Ultra-faint Dwarf Galaxy Segue~1},
  author={T. Fritz and M. Lokken and N. Kallivayalil and A. Wetzel and S. Linden and P. Zivick and E. Tollerud},
  journal={arXiv: Astrophysics of Galaxies},
  year={2017}
}
  • T. Fritz, M. Lokken, +4 authors E. Tollerud
  • Published 2017
  • Physics
  • arXiv: Astrophysics of Galaxies
  • We present a proper motion measurement for the ultra-faint dwarf spheroidal galaxy Segue 1, using SDSS and LBC data as the first and second epochs, separated by a baseline of ~10 years. This is not only the first proper motion reported for Segue 1, but also the first for any ultra-faint dwarf galaxy. We obtain a measurement of mu_alpha * cos(delta) =-0.37+/-0.57 mas/yr and mu_delta=-3.39+/-0.58 mas/yr. Combining this with the known line-of-sight velocity, this corresponds to Galactocentric… CONTINUE READING

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    References

    Publications referenced by this paper.
    SHOWING 1-10 OF 68 REFERENCES
    Proper motion of the Draco dwarf galaxy from Subaru Suprime-Cam data
    13
    The least-luminous galaxy: Spectroscopy of the milky way satellite Segue 1
    169
    A Complete Spectroscopic Survey of the Milky Way Satellite Segue 1: The Darkest Galaxy
    201
    Proper motion of the Sextans dwarf galaxy from Subaru Suprime-Cam data
    10
    THE PROPER MOTION OF PALOMAR 5
    25