Observations of DG Tauri with the Keck Interferometer

August 2003 • 2003ApJ...592L..83C

Authors • Colavita, M. • Akeson, R. • Wizinowich, P. • Shao, M. • Acton, S. • Beletic, J. • Bell, J. • Berlin, J. • Boden, A. • Booth, A. • Boutell, R. • Chaffee, F. • Chan, D. • Chock, J. • Cohen, R. • Crawford, S. • Creech-Eakman, M. • Eychaner, G. • Felizardo, C. • Gathright, J. • Hardy, G. • Henderson, H. • Herstein, J. • Hess, M. • Hovland, E. • Hrynevych, M. • Johnson, R. • Kelley, J. • Kendrick, R. • Koresko, C. • Kurpis, P. • Le Mignant, D. • Lewis, H. • Ligon, E. • Lupton, W. • McBride, D. • Mennesson, B. • Millan-Gabet, R. • Monnier, J. • Moore, J. • Nance, C. • Neyman, C. • Niessner, A. • Palmer, D. • Reder, L. • Rudeen, A. • Saloga, T. • Sargent, A. • Serabyn, E. • Smythe, R. • Stomski, P. • Summers, K. • Swain, M. • Swanson, P. • Thompson, R. • Tsubota, K. • Tumminello, A. • van Belle, G. • Vasisht, G. • Vause, J. • Walker, J. • Wallace, K. • Wehmeier, U.

Abstract • We present the first science results from the Keck Interferometer, a direct-detection infrared interferometer utilizing the two 10 m 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 0.12-0.24 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.

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Rachel Akeson

IPAC Deputy Director