A catalog of calibrator stars for 200-meter baseline near-infrared stellar interferometry

Antoine Merand; Pascal Borde; Vincent Coude du Foresto

doi:10.1117/12.550757

20 October 2004 A catalog of calibrator stars for 200-meter baseline near-infrared stellar interferometry

Antoine Merand, Pascal Borde, Vincent Coude du Foresto

Proceedings Volume 5491, New Frontiers in Stellar Interferometry; (2004) https://doi.org/10.1117/12.550757
Event: SPIE Astronomical Telescopes + Instrumentation, 2004, Glasgow, United Kingdom

Abstract

We present a catalog of reference stars suitable for calibrate long baseline interferometric observations in the infrared. This work includes and extends the previous catalog by Bord\'e et al. (2002): in the K band, a precision of 1~\% or better can be achieved on the visibility with interferometric baselines up to $\sim 200$ meters instead of $\sim 100$ in the preceding version. Angular diameters are computed by way of the absolute spectro-photometric calibration method proposed by Cohen et al. (1999), using IRAS and 2MASS photometric measurements. Our updated catalog contains G8--M0 stars with angular diameters 0.6--1.8~mas (median 1.1~mas) and a median error of 2.1~\%. The median magnitudes are 3.5 in K and 6.5 in V. Our grid is dense enough that one would find a calibrator star closer than 10 degrees to any direction on the sky.

Citation Download Citation

Antoine Merand, Pascal Borde, and Vincent Coude du Foresto "A catalog of calibrator stars for 200-meter baseline near-infrared stellar interferometry", Proc. SPIE 5491, New Frontiers in Stellar Interferometry, (20 October 2004); https://doi.org/10.1117/12.550757

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