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Laser Guide Star Adaptive Optics Imaging Polarimetry of Herbig Ae/Be Stars

Perrin, Marshall D. and Graham, James R. and Kalas, Paul and Lloyd, James P. and Max, Claire E. and Gavel, Donald T. and Pennington, Deanna M. and Gates, Elinor L. (2004) Laser Guide Star Adaptive Optics Imaging Polarimetry of Herbig Ae/Be Stars. Science, 303 (5662). pp. 1345-1348. ISSN 0036-8075. doi:10.1126/science.1094602.

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We have used laser guide star adaptive optics and a near-infrared dual-channel imaging polarimeter to observe light scattered in the circumstellar environment of Herbig Ae/Be stars on scales of 100 to 300 astronomical units. We revealed a strongly polarized, biconical nebula 10 arc seconds (6000 astronomical units) in diameter around the star LkHα 198 and also observed a polarized jet-like feature associated with the deeply embedded source LkHα 198-IR. The star LkHα 233 presents a narrow, unpolarized dark lane consistent with an optically thick circumstellar disk blocking our direct view of the star. These data show that the lower-mass T Tauri and intermediate mass Herbig Ae/Be stars share a common evolutionary sequence.

Item Type:Article
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URLURL TypeDescription Online Material
Perrin, Marshall D.0000-0002-3191-8151
Kalas, Paul0000-0002-6221-5360
Max, Claire E.0000-0003-0682-5436
Gates, Elinor L.0000-0002-3739-0423
Additional Information:© 2004 American Association for the Advancement of Science. Received 11 December 2003; accepted 23 January 2004. We thank the Lick Observatory staff who assisted in these observations, including T. Misch, K. Chloros, and J. Morey; the many individuals who have contributed to making the laser guide star system a reality; and B. Whitney for providing us with electronic versions of models. Onyx Optics fabricated our YLF Wollaston prisms. Supported in part by NSF Science and Technology Center for Adaptive Optics, managed by the University of California at Santa Cruz under cooperative agreement AST-9876783 and also under the auspices of the U.S. Department of Energy, National Nuclear Security Administration, by the University of California, Lawrence Livermore National Laboratory, under contract W-7405-Eng-48. P.K. received additional support from the NASA Origins Program (grant NAG5-11769). M.D.P. is supported by a NASA Michelson Graduate Fellowship, under contract to the Jet Propulsion Laboratory (JPL). JPL is managed for NASA by the California Institute of Technology.
Funding AgencyGrant Number
Department of Energy (DOE)W-7405-ENG-48
NASA Michelson FellowshipUNSPECIFIED
Issue or Number:5662
Record Number:CaltechAUTHORS:20141121-125319351
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Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:52048
Deposited By: Tony Diaz
Deposited On:21 Nov 2014 21:05
Last Modified:10 Nov 2021 19:19

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