Observations of DG Tauri with the Keck

Mark Colavita,Rachel Lynn Akeson,Peter L. Wizinowich, Ming Shao,S. Acton,J. Beletic, John B. Bell, Jana Berlin, Andy Boden,Andrew J. Booth,R. Boutell,F. Chaffee, Daniel Chan,J. Chock, Ronald E. Cohen, Steven Crawford,Michelle J. Creech-Eakman, Glenn Eychaner, Claude Felizardo, J. T. Gathright, Grahame Hardy, Heath Henderson, J. S. Herstein,Mareike Hess, Espen Hovland, Michael A. Hrynevych, R. P. Johnson, J. Kelley, Robert Kendrick,C. D. Koresko, Peter Kurpis,David Le Mignant,Hilton Lewis, Ethan Ligon, William Lupton, Diane McBride, Bertrand P. Mennesson,Rafael Millan-Gabet,John D. Monnier, J. Moore, Christopher Nance,C. Neyman,Albert F. Niessner, Derecke Palmer, Leonard Reder,Andy C. Rudeen,T. Saloga,Anneila I. Sargent,Eugene Serabyn,R. Smythe,Paul J. Stomski,Kellee Summers,Mark Swain, Peter B. Swanson, Rodger Thompson, Koji Tsubota, Antonietta Tumminello,Gerard T. van Belle,Gautam Vasisht, Jordan Vause, Jacqueline Walker,Ken Wallace, Udo F. Wehmeier

semanticscholar（2003）

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Abstract

We present the first science results from the Keck Interferometer, a direct-detection infrared interferometer utilizing the two 10-meter Keck telescopes. The instrument and system components are briefly described. We then present observations of the T Tauri object DG Tau, which is resolved by the interferometer. The resolved component has a radius of 0.12 to 0.24 AU, depending on the assumed stellar and extended component fluxes and the model geometry used. Possible origins and implications of the resolved emission are discussed. Subject headings: instrumentation: interferometers – stars: pre-main sequence — circumstellar matter

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