Lu, Jessica R. and Ghez, Andrea M. and Yelda, Sylvana and Do, Tuan and Clarkson, Will and McCrady, Nate and Morris, Mark (2010) Recent Results and Perspectives for Precision Astrometry and Photometry with Adaptive Optics. In: Adaptive optics systems II. Proceedings of SPIE (7736). Society of Photo-optical Instrumentation Engineers (SPIE) , Bellingham, WA, Art. No. 77361I. ISBN 978-0-8194-8226-6 http://resolver.caltech.edu/CaltechAUTHORS:20110314-153324741
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Large ground-based telescopes equipped with adaptive optics (AO) systems have ushered in a new era of high-resolution infrared photometry and astrometry. Relative astrometric accuracies of <0.2 mas have already been demonstrated from infrared images with spatial resolutions of 55-95 mas resolution over 10-20" fields of view. Relative photometric accuracies of 3% and absolute photometric accuracies of 5%-20% are also possible. I will review improvements and current limitations in astrometry and photometry with adaptive optics of crowded stellar fields. These capabilities enable experiments such as measuring orbits for brown dwarfs and exoplanets, studying our Galaxy's supermassive black hole and its environment, and identifying individual stars in young star clusters, which can be used test the universality of the initial mass function.
|Item Type:||Book Section|
|Additional Information:||© 2010 SPIE.|
|Subject Keywords:||adaptive optics; astrometry|
|Official Citation:||Jessica R. Lu, Andrea M. Ghez, Sylvana Yelda, Tuan Do, Will Clarkson, Nate McCrady and Mark Morris, "Recent results and perspectives for precision astrometry and photometry with adaptive optics", Proc. SPIE 7736, 77361I (2010); doi:10.1117/12.859737|
|Usage Policy:||No commercial reproduction, distribution, display or performance rights in this work are provided.|
|Deposited By:||Tony Diaz|
|Deposited On:||16 Mar 2011 23:18|
|Last Modified:||26 Dec 2012 13:02|
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