AAOmega radial velocities rule out current membership of the planetary nebula NGC 2438 in the open cluster M46

  title={AAOmega radial velocities rule out current membership of the planetary nebula NGC 2438 in the open cluster M46},
  author={L{\'a}szl{\'o} L. Kiss and Gyula M. Szab{\'o} and Zolt{\'a}n Balog and Quentin A. Parker and David J. Frew},
  journal={Monthly Notices of the Royal Astronomical Society},
  • L. Kiss, G. Szabó, D. Frew
  • Published 1 September 2008
  • Physics
  • Monthly Notices of the Royal Astronomical Society
We present new radial velocity measurements of 586 stars in a one-degree field centred on the open cluster M46, and the planetary nebula NGC 2438 located within a nuclear radius of the cluster. The data are based on medium-resolution optical and near-infrared spectra taken with the AAOmega spectrograph on the Anglo-Australian Telescope. We find a velocity difference of about 30 km s -1 between the cluster and nebula, thus removing all ambiguities about the cluster membership of the planetary… 

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