Optical and infrared observations of RV Tauri stars
Open Access
- 1 July 1987
- journal article
- research article
- Published by Oxford University Press (OUP) in Monthly Notices of the Royal Astronomical Society
- Vol. 227 (1) , 143-159
- https://doi.org/10.1093/mnras/227.1.143
Abstract
We present optical and IR photometry of RV Tauri stars, much of which was obtained nearly simultaneously over the wavelength range 0.36–10 µm. From the dereddened optical–IR flux distributions we deduce stellar and (where appropriate) dust shell parameters. The deduced stellar colours are in good agreement with those inferred from optical spectroscopy. The Planck mean optical depths of the dusty RV Tauri stars range from 0.07 to 0.63, the corresponding circumstellar contributions to E(B–V) ranging from ~0.02 to ~0.2. The observations show that the flux distributions of oxygen- and carbon-rich types are indistinguishable photometrically, that some of these objects may have multiple dust shells and hence that dust production in RV Tauri stars probably occurs sporadically rather than continuously.Keywords
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