Studies of multiple stellar systems – IV. The triple-lined spectroscopic system Gliese 644

  title={Studies of multiple stellar systems – IV. The triple-lined spectroscopic system Gliese 644},
  author={Tsevi Mazeh and David W. Latham and Elad Goldberg and Guillermo Torres and Robert P. Stefanik and Todd J. Henry and Shay Zucker and Orly Gnat and Eran. O. Ofek},
  journal={Monthly Notices of the Royal Astronomical Society},
  • T. Mazeh, D. Latham, E. Ofek
  • Published 26 February 2001
  • Physics, Geology
  • Monthly Notices of the Royal Astronomical Society
We present a radial velocity study of the triple-lined system Gliese 644 and derive spectroscopic elements for the inner and outer orbits with periods of 2.965 5 and 627 d. We also utilize old visual data, as well as modern speckle and adaptive optics observations, to derive a new astrometric solution for the outer orbit. These two orbits together allow us to derive masses for each of the three components in the system: MA=0.410±0.028 (6.9 per cent), MBa=0.336±0.016 (4.7 per cent), and MBb=0… 

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