Multiwavelength diameters of nearby Miras and semiregular variables

  title={Multiwavelength diameters of nearby Miras and semiregular variables},
  author={Michael J. Ireland and Peter G. Tuthill and Timothy R. Bedding and J. Gordon Robertson and Andrew P. Jacob},
  journal={Monthly Notices of the Royal Astronomical Society},
ABSTRACT We have used optical interferometry to obtain multi-wavelength visibility curves for eightred giants over the wavelength range 650–1000 nm. The observations consist of wavelength-dispersed fringes recorded with MAPPIT (Masked APerture-Plane Interference Telescope) atthe 3.9-mAnglo-AustralianTelescope.We present results for fourMiras (R Car, oCet, R Hya,R Leo) and four semi-regularvariables (R Dor, W Hya, L 2 Pup, γ Cru). All stars except γ Crushow strong variations of angular size with… 

Clumpy dust clouds and extended atmosphere of the AGB star W Hydrae revealed with VLT/SPHERE-ZIMPOL and VLTI/AMBER

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Mass loss from AGB stars - from VLT to Herschel and back

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Dust and molecular shells in asymptotic giant branch stars - Mid-infrared interferometric observations of R Aquilae, R Aquarii, R Hydrae, W Hydrae, and V Hydrae

Context. Asymptotic giant branch (AGB) stars are one of the largest distributors of dust into the interstellar medium. However, the wind formation mechanism and dust condensation sequence leading to

The mid-infrared diameter of W Hydrae ,

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Comparison of dynamical model atmospheres of Mira variables with mid-infrared interferometric and spectroscopic observations

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The angular diameters of six oxygen-rich Mira-type long-period variables have been measured at various NIR wavelengths using the aperture-masking technique in an extensive observing program from 1997

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Dust scattering in the Miras R Car and RR Sco resolved by optical interferometric polarimetry

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Effects of molecular contamination of IR near‐continuum bandpasses on measurements of M‐type Mira diameters

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Large‐amplitude periodic variations in the angular diameter of R Leonis

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Infrared colours for Mira-like long-period variables found in the Catalogue

Near-infrared, JHKL, photometry is presented for 193 Mira and semi-regular variables that were observed by Hipparcos; periods, bolometric magnitudes and amplitudes are derived for 92 of them. Because

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Reliable prediction of stellar diameters, particularly angular diameters, is a useful and necessary tool for the increasing number of milliarcsecond resolution studies being carried out in the

Multi-wavelength bispectrum speckle interferometry of R Leo and comparison with Mira star models

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Variable Stars in the Local Group

  • 2003

Synthesis Imaging in Radio Astronomy II

Proc of SPIE