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Proceedings Paper

Imaging protoplanets: observing transition disks with non-redundant masking
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Paper Abstract

Transition disks, protoplanetary disks with inner clearings, are promising objects in which to directly image forming planets. The high contrast imaging technique of non-redundant masking is well posed to detect planetary mass companions at several to tens of AU in nearby transition disks. We present non-redundant masking observations of the T Cha and LkCa 15 transition disks, both of which host posited sub-stellar mass companions. However, due to a loss of information intrinsic to the technique, observations of extended sources (e.g. scattered light from disks) can be misinterpreted as moving companions. We discuss tests to distinguish between these two scenarios, with applications to the T Cha and LkCa 15 observations. We argue that a static, forward-scattering disk can explain the T Cha data, while LkCa 15 is best explained by multiple orbiting companions.

Paper Details

Date Published: 4 August 2016
PDF: 12 pages
Proc. SPIE 9907, Optical and Infrared Interferometry and Imaging V, 99070D (4 August 2016); doi: 10.1117/12.2231764
Show Author Affiliations
Steph Sallum, Univ. of Arizona (United States)
Josh Eisner, Univ. of Arizona (United States)
Laird M. Close, Univ. of Arizona (United States)
Philip M. Hinz, Univ. of Arizona (United States)
Katherine B. Follette, Stanford Univ. (United States)
Kaitlin Kratter, Univ. of Arizona (United States)
Andrew J. Skemer, Univ. of California, Santa Cruz (United States)
Vanessa P. Bailey, Stanford Univ. (United States)
Runa Briguglio, INAF - Osservatorio Astrofisico di Arcetri (Italy)
Denis Defrere, Univ. de Liège (Belgium)
Bruce A. Macintosh, Stanford Univ. (United States)
Jared R. Males, Univ. of Arizona (United States)
Katie M. Morzinski, Univ. of Arizona (United States)
Alfio T. Puglisi, INAF - Osservatorio Astrofisico di Arcetri (Italy)
Timothy J. Rodigas, Carnegie Institution DTM (United States)
Eckhart Spalding, Univ. of Arizona (United States)
Peter G. Tuthill, Univ. of Sydney (Australia)
Amali Vaz, Univ. of Arizona (United States)
Alycia Weinberger, Carnegie Institution DTM (United States)
Marco Xomperio, INAF - Osservatorio Astrofisico di Arcetri (Italy)

Published in SPIE Proceedings Vol. 9907:
Optical and Infrared Interferometry and Imaging V
Fabien Malbet; Michelle J. Creech-Eakman; Peter G. Tuthill, Editor(s)

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