Direct measurement of the size and shape of the present-day stellar wind of $\eta$ Carinae

  title={Direct measurement of the size and shape of the present-day stellar wind of \$\eta\$ Carinae},
  author={Roy van Boekel and Pierre Kervella and Markus Schoeller and Tom M. Herbst and Wolfgang Brandner and L. B. F. M. Waters and D. John Hillier and Francesco Paresce and Rainer Lenzen and Anne-Marie Lagrange},
  journal={Astronomy and Astrophysics},
We present new high angular resolution observations at near-IR wavelengths of the core of the Luminous Blue Variable Carinae, using NAOS-CONICA at the VLT and VINCI at the VLT Interferometer (VLTI). The latter observations provide spatial information on a scale of 5 milli-arcsec or 11 AU at the distance of Carinae. The present-day stellar wind of Carinae is resolved on a scale of several stellar radii. Assuming spherical symmetry, we find a mass loss rate of 1:610 3 M/yr and a wind clumping… Expand

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