Diameters of Mira Stars Measured Simultaneously in the J, H, and 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.
Original languageEnglish
Pages (from-to)961-969
Number of pages9
JournalThe Astrophysical Journal
Volume620
Issue number2
Publication statusPublished - 1 Feb 2005

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    Millan-Gabet, R., Pedretti, E., Monnier, J. D., Schloerb, F. P., Traub, W. A., Carleton, N. P., Lacasse, M. G., & Segransan, D. (2005). Diameters of Mira Stars Measured Simultaneously in the J, H, and K' Near-Infrared Bands. The Astrophysical Journal, 620(2), 961-969. http://adsabs.harvard.edu/abs/2005ApJ...620..961M