Imaging protoplanets: observing transition disks with non-redundant masking

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; 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.

doi:10.1117/12.2231764

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Imaging protoplanets: observing transition disks with non-redundant masking

Sallum, S.; Eisner, J.; Close, L. M. et al.

2016 • In Optical and Infrared Interferometry and Imaging V

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https://hdl.handle.net/2268/203130

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10.1117/12.2231764

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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)

More authors (10 more)

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

Additional URL :

http://adsabs.harvard.edu/abs/2016arXiv160902559S

Available on ORBi :

since 04 November 2016

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