Four years' interferometric observations of Galactic binary Cepheids

A. Gallenne; A. Merand; P. Kervella; N. R. Evans; C. Profitt; G. Pietrzynski; W. Gieren

doi:10.1051/epjconf/201715203007

Four years' interferometric observations of Galactic binary Cepheids

Solar and Stellar Astrophysics 2017-09-13 v1

Authors: A. Gallenne , A. Merand , P. Kervella , N. R. Evans , C. Profitt , G. Pietrzynski , W. Gieren

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Abstract

We give an update on our long-term program of Galactic Cepheids started in 2012, whose goal is to measure the visual orbits of Cepheid companions. Using the VLTI/PIONIER and CHARA/MIRC instruments, we have now detected several com- panions, and we already have a good orbital coverage for several of them. By combining interferometry and radial velocities, we can now derive all the orbital elements of the systems, and we will be soon able to estimate the Cepheid masses.

Keywords

cepheid variable stars space missions and telescopes

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@article{arxiv.1707.00691,
  title  = {Four years' interferometric observations of Galactic binary Cepheids},
  author = {A. Gallenne and A. Merand and P. Kervella and N. R. Evans and C. Profitt and G. Pietrzynski and W. Gieren},
  journal= {arXiv preprint arXiv:1707.00691},
  year   = {2017}
}

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2 pages, 1 figure, proceedings of the 22nd Los Alamos Stellar Pulsation Conference "Wide-field variability surveys: a 21st-century perspective" held in San Pedro de Atacama, Chile, Nov. 28-Dec. 2, 2016

Four years' interferometric observations of Galactic binary Cepheids

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