Observations of DG Tauri with the Keck Interferometer

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

doi:10.1086/377704

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Observations of DG Tauri with the Keck Interferometer

M. Colavita¹, R. Akeson², P. Wizinowich³, M. Shao¹, S. Acton³, J. Beletic³, J. Bell³, J. Berlin¹, A. Boden², A. Booth¹, R. Boutell³, F. Chaffee³, D. Chan³, J. Chock³, R. Cohen³, S. Crawford¹, M. Creech-Eakman¹, G. Eychaner¹, C. Felizardo², J. Gathright³, G. Hardy¹, H. Henderson², J. Herstein², M. Hess³, E. Hovland¹, M. Hrynevych³, R. Johnson¹, J. Kelley¹, R. Kendrick³, C. Koresko², P. Kurpis³, D. Le Mignant³, H. Lewis³, E. Ligon¹, W. Lupton³, D. McBride³, B. Mennesson¹, R. Millan-Gabet², J. Monnier⁴, J. Moore¹, C. Nance³, C. Neyman³, A. Niessner¹, D. Palmer¹, L. Reder¹, A. Rudeen³, T. Saloga³, A. Sargent², E. Serabyn¹, R. Smythe¹, P. Stomski³, K. Summers³, M. Swain¹, P. Swanson¹, R. Thompson¹, K. Tsubota³, A. Tumminello¹, G. van Belle², G. Vasisht¹, J. Vause³, J. Walker³, K. Wallace¹, and U. Wehmeier³

Published 2003 July 7 • © 2003. The American Astronomical Society. All rights reserved. Printed in U.S.A.
The Astrophysical Journal, Volume 592, Number 2 Citation M. Colavita et al 2003 ApJ 592 L83 DOI 10.1086/377704

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¹ Jet Propulsion Laboratory, 4800 Oak Grove Drive, Pasadena, CA 91109

² Michelson Science Center, 770 South Wilson Avenue, Pasadena, CA 91125

³ W. M. Keck Observatory, California Association for Research in Astronomy, 65-1120 Mamalahoa Highway, Kamuela, HI 96743

⁴ University of Michigan, 941 Dennison Building, Ann Arbor, MI 48109

Dates

Received 2003 April 17
Accepted 2003 June 24
Published 2003 July 7

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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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Observations of DG Tauri with the Keck Interferometer

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