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Proceedings Paper

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

Paper Details

Date Published: 20 October 2004
PDF: 11 pages
Proc. SPIE 5491, New Frontiers in Stellar Interferometry, (20 October 2004); doi: 10.1117/12.550757
Show Author Affiliations
Antoine Merand, LESIA, Observatoire de Paris-Meudon (France)
Pascal Borde, Harvard-Smithsonian Ctr. for Astrophysics (United States)
Vincent Coude du Foresto, LESIA, Observatoire de Paris-Meudon (France)


Published in SPIE Proceedings Vol. 5491:
New Frontiers in Stellar Interferometry
Wesley A. Traub, Editor(s)

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