Imaging protoplanets: observing transition disks with non-redundant masking

Description

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.

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1. Steph Sallum ; Josh Eisner ; Laird M. Close ; Philip M. Hinz ; Katherine B. Follette ; Kaitlin Kratter ; Andrew J. Skemer ; Vanessa P. Bailey ; Runa Briguglio ; Denis Defrere ; Bruce A. Macintosh ; Jared R. Males ; Katie M. Morzinski ; Alfio T. Puglisi ; Timothy J. Rodigas ; Eckhart Spalding ; Peter G. Tuthill ; Amali Vaz ; Alycia Weinberger and Marco Xomperio " Imaging protoplanets: observing transition disks with non-redundant masking ", Proc. SPIE 9907, Optical and Infrared Interferometry and Imaging V, 99070D (August 4, 2016); doi:10.1117/12.2231764; http://dx.doi.org/10.1117/12.2231764
2. 10.1117/12.2231764
3. http://hdl.handle.net/10150/622532
4. http://arizona.openrepository.com/arizona/handle/10150/622532
5. OPTICAL AND INFRARED INTERFEROMETRY AND IMAGING V

Tags

high-contrast imaging

interferometry

transition disks

exoplanets

LkCa 15

T Cha

Additional Fields

Identifer	oai:union.ndltd.org:arizona.edu/oai:arizona.openrepository.com:10150/622532
Date	04 August 2016
Creators	Sallum, Steph, Eisner, Josh, Close, Laird M., Hinz, Philip M., Follette, Katherine B., Kratter, Kaitlin, Skemer, Andrew J., Bailey, Vanessa P., Briguglio, Runa, Defrere, Denis, Macintosh, Bruce A., Males, Jared R., Morzinski, Katie M., Puglisi, Alfio T., Rodigas, Timothy J., Spalding, Eckhart, Tuthill, Peter G., Vaz, Amali, Weinberger, Alycia, Xomperio, Marco
Contributors	Univ Arizona, Dept Astron, Univ. of Arizona (United States), Univ. of Arizona (United States), Univ. of Arizona (United States), Univ. of Arizona (United States), Stanford Univ. (United States), Univ. of Arizona (United States), Univ. of California, Santa Cruz (United States), Stanford Univ. (United States), INAF - Osservatorio Astrofisico di Arcetri (Italy), Univ. de Liège (Belgium), Stanford Univ. (United States), Univ. of Arizona (United States), Univ. of Arizona (United States), INAF - Osservatorio Astrofisico di Arcetri (Italy), Carnegie Institution DTM (United States), Univ. of Arizona (United States), Univ. of Sydney (Australia), Univ. of Arizona (United States), Carnegie Institution DTM (United States), INAF - Osservatorio Astrofisico di Arcetri (Italy)
Publisher	SPIE-INT SOC OPTICAL ENGINEERING
Source Sets	University of Arizona
Language	English
Detected Language	English
Type	Article
Rights	© 2016 SPIE
Relation	http://proceedings.spiedigitallibrary.org/proceeding.aspx?doi=10.1117/12.2231764