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Imaging protoplanets: observing transition disks with non-redundant masking
Sallum, S.; Eisner, J.; Close, L. M. et al.
2016In Optical and Infrared Interferometry and Imaging V
 

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Keywords :
Astrophysics - Earth and Planetary Astrophysics; Exoplanets; LkCa 15; NRM; Non-redundant aperture masking; LBT
Abstract :
[en] 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.
Disciplines :
Space science, astronomy & astrophysics
Author, co-author :
Sallum, S.
Eisner, J.
Close, L. M.
Hinz, P. M.
Follette, K. B.
Kratter, K.
Skemer, A. J.
Bailey, V. P.
Briguglio, R.
Defrere, Denis ;  Université de Liège > Département d'astrophys., géophysique et océanographie (AGO) > Astroph. extragalactique et observations spatiales (AEOS)
Macintosh, B. A.
Males, J. R.
Morzinski, K. M.
Puglisi, A. T.
Rodigas, T. J.
Spalding, E.
Tuthill, P. G.
Vaz, A.
Weinberger, A.
Xomperio, M.
More authors (10 more) Less
Language :
English
Title :
Imaging protoplanets: observing transition disks with non-redundant masking
Publication date :
2016
Event name :
SPIE Astronomical Telescopes and Instrumentation 2016
Event organizer :
SPIE
Event place :
Edimbourgh, United Kingdom
Event date :
26/6/2016 - 1/7/2016
By request :
Yes
Audience :
International
Main work title :
Optical and Infrared Interferometry and Imaging V
Publisher :
International Society for Optical Engineering, Bellingham, United States - Washington
Collection name :
Proceedings of SPIE, volume 9907
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