A Caltech Library Service

Adaptive Optics Observations of Exoplanets, Brown Dwarfs, and Binary Stars

Hinkley, Sasha (2012) Adaptive Optics Observations of Exoplanets, Brown Dwarfs, and Binary Stars. In: From Interacting Binaries to Exoplanets: Essential Modeling Tools. IAU Symposium Proceedings Series . No.282. Cambridge University Press , New York, pp. 181-188. ISBN 978-1-107-01982-9.

PDF - Published Version
See Usage Policy.


Use this Persistent URL to link to this item:


The current direct observations of brown dwarfs and exoplanets have been obtained using instruments not specifically designed for overcoming the large contrast ratio between the host star and any wide-separation faint companions. However, we are about to witness the birth of several new dedicated observing platforms specifically geared towards high contrast imaging of these objects. The Gemini Planet Imager, VLT-SPHERE, Subaru HiCIAO, and Project 1640 at the Palomar 5m telescope will return images of numerous exoplanets and brown dwarfs over hundreds of observing nights in the next five years. Along with diffraction-limited coronagraphs and high-order adaptive optics, these instruments also will return spectral and polarimetric information on any discovered targets, giving clues to their atmospheric compositions and characteristics. Such spectral characterization will be key to forming a detailed theory of comparative exoplanetary science which will be widely applicable to both exoplanets and brown dwarfs. Further, the prevalence of aperture masking interferometry in the field of high contrast imaging is also allowing observers to sense massive, young planets at solar system scales (~3–30 AU)— separations out of reach to conventional direct imaging techniques. Such observations can provide snapshots at the earliest phases of planet formation—information essential for constraining formation mechanisms as well as evolutionary models of planetary mass companions. As a demonstration of the power of this technique, I briefly review recent aperture masking observations of the HR 8799 system. Moreover, all of the aforementioned techniques are already extremely adept at detecting low-mass stellar companions to their target stars, and I present some recent highlights.

Item Type:Book Section
Related URLs:
URLURL TypeDescription DOIArticle
Hinkley, Sasha0000-0001-8074-2562
Additional Information:© 2012 International Astronomical Union. Published online: 23 April 2012.
Subject Keywords:instrumentation: adaptive optics, instrumentation: high angular resolution, instrumentation: spectrographs, techniques: high angular resolution, techniques: interferometric, (stars:) binaries: general, (stars:) binaries (including multiple): close
Series Name:IAU Symposium Proceedings Series
Issue or Number:282
Record Number:CaltechAUTHORS:20121108-105124821
Persistent URL:
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:35356
Deposited By: Tony Diaz
Deposited On:08 Nov 2012 22:43
Last Modified:09 Nov 2021 23:14

Repository Staff Only: item control page