A Moving Cluster Distance to the Exoplanet 2M1207b in the TW Hydrae Association

  title={A Moving Cluster Distance to the Exoplanet 2M1207b in the TW Hydrae Association},
  author={Eric E. Mamajek},
  journal={The Astrophysical Journal},
  pages={1385 - 1394}
  • E. Mamajek
  • Published 18 July 2005
  • Physics, Geology
  • The Astrophysical Journal
A candidate extrasolar planet companion to the young brown dwarf 2MASSW J1207334-393254 (hereafter 2M1207) was recently discovered by Chauvin et al. They find that the temperature and luminosity of 2M1207b are consistent with a young, ~5MJ planet. The 2M1207 system is purported to be a member of the TW Hya association (TWA) and situated ~70 pc away. Using a revised space motion vector for TWA and improved proper motion for 2M1207, I use the moving cluster method to estimate the distance to the… 

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