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Proceedings Paper

Results from the PTI's studies of the spectral angular diameters of Mira variables
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Paper Abstract

A dedicated program of measuring angular sizes of Mira variables using the Palomar Testbed Interferometer has resulted in more than 13,000 measurements of over 60 stars. With visibility data in five channels across the K band, atmospheric extension and sources of opacity are evident in the dataset. Using multiple-epoch narrow-band data, phase lags between wavelength-dependent angular size cycles indicate spatial extent of molcular atmospheres. A spectral angular diameter classification system is developed, based on the recurring shapes of the spectral traces seen in the dataset, which correlates to spectral type. A period-radius relationship is explored, and a refinement on the estimation of angular sizes is made.

Paper Details

Date Published: 21 February 2003
PDF: 14 pages
Proc. SPIE 4838, Interferometry for Optical Astronomy II, (21 February 2003); doi: 10.1117/12.459126
Show Author Affiliations
Robert Russell Thompson, Jet Propulsion Lab. (United States)
Michelle J. Creech-Eakman, Jet Propulsion Lab. (United States)
Gerard Theodore van Belle, Jet Propulsion Lab. (United States)

Published in SPIE Proceedings Vol. 4838:
Interferometry for Optical Astronomy II
Wesley A. Traub, Editor(s)

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