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Published December 1, 2001 | Published + Accepted Version
Journal Article Open

A Young Protoplanetary Disk in the Bok Globule CB 26?


We present subarcsecond resolution millimeter-wave images of a circumstellar disk in the Bok globule CB 26. The presence of an edge-on disk is confirmed by the dust continuum morphology and the velocity field of ^(13)CO emission, which displays a Keplerian rotation pattern about an axis perpendicular to the long axis of the dust emission. We deduce a mass of ~0.3 M_☉ for the obscured central star. The disk is optically thick at millimeter wavelengths inside 120 AU, has a symmetric 20° warp beyond 120 AU, an outer radius of ~200 AU, and a mass of at least 0.1 M_☉. We suggest that the CB 26 system is in an intermediate stage between deeply embedded protostellar accretion disks and the more evolved, perhaps protoplanetary, disks around T Tauri stars.

Additional Information

© 2001 The American Astronomical Society. Received 2001 September 3; accepted 2001 October 19; published 2001 November 7. The Owens Valley millimeter-wave array is supported by NSF grant AST 99-81546. Funding from NASA's Origins of Solar Systems program (through grant NAG5-9530) is gratefully acknowledged. Research at Owens Valley on the formation of young stars and planets is also supported by the Norris Planetary Origins Project. We benefited from discussions with B. Stecklum, L. Hartmann, and H. Butner.

Attached Files

Published - Launhardt_2001_ApJ_562_L173.pdf

Accepted Version - 0111026.pdf


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