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Diameters of Mira Stars Measured Simultenously in the J,H,K' Near-Infrared Bands

R. Millan-Gabet·E. Pedretti·J. D. Monnier·F. P. Schloerb·W. A. Traub·N. P. Carleton·M. G. Lacasse·D. Segransan
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Abstract

We present the first spatially resolved observations of a sample of 23 Mira stars simultaneously measured in the near-infrared J, H and K' bands. The technique used was optical long baseline interferometry, and we present for each star visibility amplitude measurements as a function of wavelength. We also present characteristic sizes at each spectral band, obtained by fitting the measured visibilities to a simple uniform disk model. This approach reveals the general relation J diameter < H diameter < K' diameter.

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R. Millan-Gabet, E. Pedretti, J. D. Monnier, F. P. Schloerb, W. A. Traub, N. P. Carleton, M. G. Lacasse, D. Segransan. 2004-11-02. Diameters of Mira Stars Measured Simultenously in the J,H,K' Near-Infrared Bands. https://doi.org/10.1086/427163

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