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The Orbit and Occultations of KH 15D

Winn, Joshua N. and Hamilton, Catrina M. and Herbst, William J. and Hoffman, Jennifer L. and Holman, Matthew J. and Johnson, John A. and Kuchner, Marc J. (2006) The Orbit and Occultations of KH 15D. Astrophysical Journal, 644 (1). pp. 510-524. ISSN 0004-637X.

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The unusual flux variations of the pre-main-sequence binary star KH 15D have been attributed to occultations by a circumbinary disk. We test whether or not this theory is compatible with newly available data, including recent radial velocity measurements, CCD photometry over the past decade, and photographic photometry over the past 50 years. We find the model to be successful, after two refinements: a more realistic motion of the occulting feature and a halo around each star that probably represents scattering by the disk. The occulting feature is exceptionally sharp edged, raising the possibility that the dust in the disk has settled into a thin layer and providing a tool for fine-scale mapping of the immediate environment of a T Tauri star. However, the window of opportunity is closing, as the currently visible star may be hidden at all orbital phases by as early as 2008.

Item Type:Article
Related URLs:
URLURL TypeDescription
Winn, Joshua N.0000-0002-4265-047X
Holman, Matthew J.0000-0002-1139-4880
Johnson, John A.0000-0001-9808-7172
Kuchner, Marc J.0000-0002-2387-5489
Additional Information:© 2006 American Astronomical Society. Received 2005 December 30; accepted 2006 February 15. We are grateful to V. Grinin and O. Yu. Barsunova for providing their optical data, and to M. Tamura for providing his group’s near-infrared data. We thank J. Barranco, E. Ford, S. Gaudi, S. Kenyon, R. Narayan, and G. Rybicki for helpful discussions. S. Gaudi, V. Grinin, and the anonymous referee provided constructive criticism of the manuscript.
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Record Number:CaltechAUTHORS:20130109-152442449
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Official Citation:The Orbit and Occultations of KH 15D Joshua N. Winn et al. 2006 ApJ 644 510
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:36283
Deposited By: Ruth Sustaita
Deposited On:09 Jan 2013 23:36
Last Modified:09 Mar 2020 13:18

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