The HD 98800 quadruple pre-main sequence system. Towards full orbital characterisation using long-baseline infrared interferometry

  title={The HD 98800 quadruple pre-main sequence system. Towards full orbital characterisation using long-baseline infrared interferometry},
  author={S. Z'uniga-Fern'andez and Johan Olofsson and Amelia Bayo and Xavier Haubois and J. M. Corral-Santana and A. Lopera-Mej'ia and Mar{\'i}a Paula Ronco and Andrei Tokovinin and Alexandre Gallenne and Grant M. Kennedy and J.-P. Berger N'ucleo Milenio de Formaci'on Planetaria and Valpara'iso and Chile. and European Southern Observatory and Santiago de Chile and Instituto de Astronom'ia and Facultad de Ciencias and Universidad de Valpara'iso and Instituto de Astrof'isica Pontificia Universidad Cat'olica d Chile and Santiago and Cerro Tololo Inter-American Observatory and NSF's NOIRLab and La Serena and Dep. of Physics and University of Warwick and Coventry and UK. and Nicolaus Copernicus Astronomical Centre and Polish Academy of Sciences and Warszawa and Poland and Universidad de Concepci'on and Departamento de Astronom'ia and Concepci'on and Unidad Mixta Internacional Franco-Chilena de Astronom'ia and Universidad de Chile and Univ. Grenoble Alpes and Ipag and Grenoble and France.},
  journal={Astronomy \& Astrophysics},
Context. HD 98800 is a young (∼ 10 Myr old) and nearby (∼ 45 pc) quadruple system, composed of two spectroscopic binaries orbiting around each other (AaAb and BaBb), with a gas-rich disk in polar configuration around BaBb. While the orbital parameters of BaBb and AB are relatively well constrained, this is not the case for AaAb. A full characterisation of this quadruple system can provide insights on the formation of such a complex system. Aims. The goal of this work is to determine the orbit… 

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  • 2019

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  • 1995

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  • 2013