Laser Guide Star Adaptive Optics Imaging Polarimetry of Herbig Ae/Be Stars-Reference-Cited by-同舟云学术

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

Published:2004-02-27 Issue:5662 Volume:303 Page:1345-1348
ISSN:0036-8075
Container-title:Science
language:en
Short-container-title:Science

Author:

Perrin Marshall D.¹²³⁴⁵,Graham James R.¹²³⁴⁵,Kalas Paul¹²³⁴⁵,Lloyd James P.¹²³⁴⁵,Max Claire E.¹²³⁴⁵,Gavel Donald T.¹²³⁴⁵,Pennington Deanna M.¹²³⁴⁵,Gates Elinor L.¹²³⁴⁵

Affiliation:

1. Astronomy Department, University of California Berkeley, Berkeley, CA 94720, USA.

2. National Science Foundation Center for Adaptive Optics, University of California Santa Cruz, 1156 High Street, Santa Cruz, CA 95064, USA.

3. Astronomy Department, California Institute of Technology, 1201 East California Boulevard, Pasadena, CA 91125, USA.

4. Lawrence Livermore National Laboratory, 7000 East Avenue, Livermore, CA 94550, USA.

5. Laboratory for Adaptive Optics, University of California Santa Cruz, 1156 High Street, Santa Cruz, CA 95064, USA.

Abstract

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.

Publisher

American Association for the Advancement of Science (AAAS)

Subject

Multidisciplinary

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