28 July 2008 Polar-interferometry: what can be learnt from the IOTA/IONIC experiment
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We report the first near-IR polar-interferometric observations, performed at the IOTA array using its integrated optics combiner IONIC. Fringes have been obtained on calibration stars and resolved late-type giants. Optical modeling of the array and dedicated laboratory measures allowed us to confirm the good accuracy obtained on the calibrated polarized visibilities and closure phases. However, no evidences for polarimetric features at high angular resolution have been detected. The simulations and the results presented here open several perspectives for polar-interferometry, especially in the context of fibered, single-mode combiners.
© (2008) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Jean-Baptiste Le Bouquin, Jean-Baptiste Le Bouquin, Karine Rousselet-Perraut, Karine Rousselet-Perraut, Jean-Philippe Berger, Jean-Philippe Berger, Emilie Herwats, Emilie Herwats, Myriam Benisty, Myriam Benisty, Olivier Absil, Olivier Absil, Denis Defrere, Denis Defrere, John Monnier, John Monnier, Wesley Traub, Wesley Traub, "Polar-interferometry: what can be learnt from the IOTA/IONIC experiment", Proc. SPIE 7013, Optical and Infrared Interferometry, 70130F (28 July 2008); doi: 10.1117/12.786377; https://doi.org/10.1117/12.786377


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